Leopold von Ledebur. Minden-Ravensburg: Denkmäler der Geschichte, der Kunst und des Altertums. 1825, pp. 125–26 [published under this title in 1934, G. H. Griese, ed.], describes the altarpiece, then intact in the Marienkirche, Bielefeld, as having a central scene with Mary as the Queen of Heaven holding the Christ Child, flanked by six scenes on either side and nine scenes on each of two wings; comments on the work's damaged state and notes that a date of 1400 is recorded on its frame; links the complex with a document of 1399 granting Johann Steinen, benefactor, permission to erect an altar devoted to the Holy Cross and Saint Jerome for which he would provide ornament.
[J. D. Passavant?]. "Beiträge zur Kenntniß der alten Malerschulen in Deutschland vom 13ten bis in das 16te Jahrhundert." Kunstblatt 22 (December 16, 1841), p. 415, mentions an altarpiece of 1400 said to be in the church of Bielefeld.
E. F[örster]. "Die Gemäldesammlung des Herrn Geh. Oberregierungsraths Krüger in Minden." Kunstblatt 28 (February 4, 1847), p. 21, publishes the wings, then in the Krüger collection, as the work of a Westphalian artist of the 14th century, apparently a follower of Master Wilhelm of Cologne; observes that the wings come from the Bielefeld area, and correspond stylistically with the altarpiece on the high altar of the Bielefeld church, whose frame, now destroyed, bore an inscription stating that the work was already in place in 1400.
Verzeichnis der Gemäldesammlung des Geheimen Regierungsrathes Krüger zu Minden. Zum Gebrauch bei deren Besichtigung. Minden, 1848, no. 6 [reprinted in Ref. Fritz 1951, p. 87], includes it in a group of three panels attributed to an "altwestphälischer Meister": The Betrayal, Christ Crowned with Thorns, and The Flaggelation; erroneously claims that these pictures came from "der Stiftskirche zu Schildesche bei Bielefeld".
G. F. Waagen. "Nachträge zur zweiten Ausgabe von Kugler's Handbuch der Geschichte der Malerei, etc." Deutsches Kunstblatt 1, no. 39 (1850), p. 308, in this addendum describes the complete altarpiece as: "Zu Bielefeld in der neustädter Kirche der Hochaltar mit Flügeln, unten mit der Jareszahl M°CCCC° bezeichnet"; attributes it to a weak local master, somewhat under the influence of Master Wilhelm of Cologne.
Wilhelm Lübke. Die Mittelalterliche Kunst in Westfalen. Leipzig, 1853, p. 343, publishes the central panel in Bielefeld as a Westphalian work from the end of the 14th century and notes that the features and gestures of the figures are similar in their idealized sweetness to the art of Master Wilhelm.
H. G. Hotho. "Geschichte der Deutschen Malerei bis 1450." Die Malerschule Huberts van Eyck: Nebst deutschen Vorgängern und Zeitgenossen. 1, Berlin, 1855, pp. 261–63, identifies the panels from the Krüger collection as earlier works by the painter of the Bielefeld Altarpiece, not realizing that they were originally a part of this altarpiece; observes that the artist was a contemporary of Master Wilhelm, closely connected with the school of Cologne.
Carl Schnaase. "Die Spätzeit des Mittelalters bis zur Blüthe der Eyck'schen Schule." Geschichte der bildenden Künste. 4, Düsseldorf, 1874, pp. 430–31, compares the Bielefeld altarpiece and the London panels [ex. Krüger] stylistically with the predella of the main altarpiece in the Osnabrück Marienkirche, not realizing that the London panels were originally a part of the Bielefeld Altarpiece.
[J. B.] Nordhoff. "Die Soester Malerei unter Meister Conrad." Bonner Jahrbücher 68 (1880), pp. 86–87, finds the main panel in Bielefeld and the related panels from the Krüger collection stylistically similar to the Crucifixion altarpiece in the Marienkirche, Dortmund, which he asserts was commissioned by the Berswordt brothers in 1431; considers the Bielefeld Altarpiece probably the earliest work of this master who was influenced by Conrad von Soest.
Theodor Jordan. "Geschichte der Neustädter Kirche." Jahresbericht des historischen Vereins für die Grafschaft Ravensberg zu Bielefeld 4 (1882), pp. 6–7, 16, asserts that the wings of the altarpiece were given to an art lover from Minden in 1840.
D. Heinrich Otte. Handbuch der Kirchlichen Kunst-Archäologie des Deutschen Mittelalters. 2, 5th ed. Leipzig, 1884, p. 630, ascribes the panel in the Bielefeld church, the main altar of the Dortmund Marienkirche, and a Death of the Virgin, flanked by an Annunciation and an Adoration of the Magi from 1422–23 (Provinzial-Museum, Münster) to the same anonymous master of the Westphalian school.
Carl Aldenhoven. Geschichte der kölner Malerschule. Lübeck, 1902, pp. 112, 386 nn. 211–211a, attributes the altarpiece and its dispersed wings to a master of the school of Soest and dates it between 1410 and 1420, although he is aware that Waagen [Ref. 1850] recorded a date of 1400 on the frame; notes that the composition of the central scene in general repeats that of a Virgin and Child with Saints from Cologne [now Johnson Collection, Philadelphia Museum of Art].
Die Bau- und Kunstdenkmäler des Kreises Bielefeld-Stadt. Münster, 1906, p. 13, pl. 11 (includes tracing of this panel), attributes the altarpiece to the school of Soest, noting that the wings had gone to London.
Hermann Schmitz. Die mittelalterliche Malerei in Soest. Münster, 1906, p. 137, discusses the central panel and states that two altars were established in the Bielefeld Marienkirche in 1399.
Grete Dexel-Brauckmann. "Lübecker Tafelmalerei in der ersten Hälfte des 15. Jahrhundert." Zeitschrift des Vereins für lübeckische Geschichte 19 (1918), pp. 28–30, 32, postulates a French model for the central scene with the Virgin and Saints, comparing it to the Carrand diptych in the Bargello, Florence; notes a close connection between the Bielefeld Altarpiece and one from Holstein (now Altertums Museum, Kiel).
Carl Hölker. Meister Conrad von Soest. Münster, 1921, p. 43, dates the Bielefeld Altarpiece later than the Virgin and Child with Saints in the Johnson Collection, which he suggests is Westphalian, but supports Dexel-Brauckman's [Ref. 1918] view that the design for this scene relies on a French model; also ascribes to the painter of the Bielefeld Altarpiece a predella in the Marienkirche, Osnabruck, and the Passion altarpiece in the Marienkirche, Dortmund.
P. J. Meier. "Werk und Wirkung des Meisters Konrad von Soest." Westfalen 1 (1921), pp. 31, 60–61.
Exhibition of British Primitive Paintings. Exh. cat., Royal Academy of Arts, London. Oxford, 1924, p. 35, no. 54, pl. 27.
Bella Martens. Meister Francke. Hamburg, 1929, vol. 1, pp. 160–61, suggests that both the central scene of the Bielefeld Altarpiece and the Johnson picture derive from a French model; in a caption dates the central panel about 1415.
P. J. Meier. "Konrad von Soest: Ein Nachtrag." Westfalen 16, nos. 1–6 (1931), pp. 44, 47, attempts the first reconstruction of the Bielefeld Altarpiece, omitting the three documented Adam and Eve panels and including three hypothetical scenes from the story of Saints Joachim and Anne.
Rolf Fritz. "Ein Flügelbild des Bielefelder Altares im Deutschen Museum." Berliner Museen 53 (1932), pp. 9–12, proposes a slightly different reconstruction of the altarpiece, including all eighteen documented wing panels as part of interior wings, probably with a few monumental figures on the exterior, as was common in Westphalia; sees the Bielefeld Altarpiece, the Osnabrück predella panels, and the altarpiece with the Crucifixion in the Dortmund Marienkirche as closely related and probably from the same workshop under the influence of Conrad von Soest, but not from the same hand; despite the date of 1400 reported to have been on the frame, maintains that the Bielefeld Altarpiece is only possible in the 1420s after Conrad von Soest's Niederwildungen Altarpiece [Stadtkirche, Bad Wildungen] and the Goldene Tafel [Landesgalerie, Hanover].
Hans Kornfeld. "A Westphalian Altarpiece." Burlington Magazine 62 (1933), pp. 161–65, pl. 2C, accepts Fritz's [Ref. 1932] reconstruction of the altarpiece, but retains the traditional date of 1400; cites a document from that year in the Bielefeld archives that he believes describes the altar: "altar dei genetricis Marie, sancti Jeronimi, sancterum Crucis et Ursule virginis," suggesting that Saints Jerome and Ursula were on the exterior wings; illustrates this panel as hanging in the church of Milton Ernest, Bedford, but "presently on loan in the Fitzwilliam Museum, Cambridge"; observes that "overpaintings in various places . . . give it, at first sight, a somewhat astonishing appearance"; discusses the panel in detail and believes it belongs to a transitional period between the style of Master Bertram and that of Master Konrad.
Alfred Stange. "Norddeutschland in der Zeit von 1400 bis 1450." Deutsche Malerei der Gotik. 3, Berlin, 1938, pp. 42–47, dates the Bielefeld Altarpiece to the beginning of the fifteenth century, and has no objection to it preceding Conrad von Soest's Niederwildungen Altarpiece [see Ref. Fritz 1932]; describes its painter as a contemporary of Conrad, whose deviations from his more refined style are due to the retention of an older manner of expression rather than a lack of skill; calls the Berswordt altarpiece in Dortmund a later work by the same hand.
Margaretta Salinger. "A Westphalian Crucifixion." Metropolitan Museum of Art Bulletin 3 (February 1945), p. 139, finds the artist closer to the earlier tradition of Master Bertram than to Conrad von Soest and his followers in Westphalia.
Kurt Steinbart. Konrad von Soest. Vienna, 1946, p. 41, dates the Bielefeld Altarpiece shortly before 1400, observing that the artist was relatively independent of Conrad von Soest and probably active in Dortmund.
Harry B. Wehle and Margaretta Salinger. The Metropolitan Museum of Art: A Catalogue of Early Flemish, Dutch and German Paintings. New York, 1947, p. 164.
Conrad von Soest und sein Kreis. Exh. cat., Schloss Cappenberg, Selm. Dortmund, 1950, no. 23.
Rolf Fritz. "Acht unbekannte Tafeln des Bielefelder Altares, zugleich ein Beitrag zum Meister des Berswordtaltares." Westfalen 28 (1950), pp. 193–202, pl. 94, publishes eight of the dispersed scenes from the altar wings, in which he sees the influence of Master Bertram, and comments on the influence of French painting and illumination in the main scene; dates the altarpiece about 1400 and notes that between 1398 and 1414 at least eight altars—not altarpieces—are mentioned in the Marienkirche in the Bielefeld archives, making it difficult to identify a patron; characterizes the artist, to whom he also attributes the Berswordt Altarpiece (noting that this altar was dedicated in 1397), as preparing the way for Conrad von Soest.
Rolf Fritz in Allgemeines Lexikon der bildenden Künstler. 37, Leipzig, 1950, p. 189, lists the Bielefeld altarpiece under "Meister des Kreuzigungsaltars in der Dortmunder Marienkirche," and attributes it to "the same workshop" as the Berswordt altar.
Paul Pieper. "Konrad von Soest und sein Kreis: Zu der Ausstellung des Dortmunder Museums in Schloß Cappenberg." Kunstchronik 3 (1950), p. 148, ascribes the Bielefeld Altarpiece not to a follower of Conrad von Soest, but to a contemporary of the same age or older who worked in the tradition of Master Bertram, and who came under the influence of the art of the West; dates the Berswordt Altarpiece before the work in Bielefeld, in agreement with an oral opinion expressed by Stange at the time the exhibition catalogue was under preparation.
"Der Katalog der Gemäldesammlung Krüger zu Minden." Westfalen 29, no. 1 (1951), pp. 88, 95, under cat. no. 6.
Ingeborg Eckert. Ein Altargemaelde der Gotik. Bielefeld, 1956, pp. 22, 29, 62, ill. pp. 29, 63.
Michael Levey. National Gallery Catalogues: The German School. London, 1959, p. 113.
German Art 1400–1800 from Collections in Great Britain. Exh. cat., City of Manchester Art Gallery. [Manchester], , p. 9.
Alfred Stange. "Eine unbekannte westfälische Tafel." Niederdeutsche Beiträge zur Kunstgeschichte 2 (1962), pp. 181–86 n. 2, dates the Bielefeld Altarpiece at the beginning of the 15th century and the Berswordt Altarpiece earlier, possibly before 1390.
I[ngeborg]. Eckert Städtisches Museum. Gotische Kunst in Bielefeld, 1250–1500 (), pp. 6–7, 12, 40, no. 16, ill. p. 43 [not included in exhibition].
Wolfgang Eckhardt. "Westfälische Malerei des 14. Jahrhunderts im Landesmuseum Münster." Weltkunst 34 (January 1964).
J. W. von Moltke. "Letters: Lost Panels of a Bielefeld Altar-piece." Burlington Magazine 106 (May 1964), p. 237.
Paul Pieper. Westfälische Malerei des 14. Jahrhunderts [published in Westfalen, vol. 42, nos. 1-2, 1964]. Exh. cat., Landesmuseum Münster. Münster, 1964, pp. 17–18, 71–74, calls the complex one of the great altarpieces of the period, observing that it must have been produced by an entire workshop rather than a single artist; considers the lateral panels largely workshop productions; notes that the original support was canvas applied to oak.
Georg Troescher. Burgundische Malerei. Berlin, 1966, vol. 1, pp. 158, 282–83, dates the altarpiece both about 1410–20 and about 1430.
Alfred Stange. "Köln, Niederrhein, Westfalen, Hamburg, Lübeck und Niedersachsen." Kritisches Verzeichnis der deutschen Tafelbilder vor Dürer. 1, Munich, 1967, pp. 137–38, no. 447e.
Wieland Koenig. Studien zum Meister von Liesborn. Beckum, 1974, p. 61, pl.79.
Friedrich Jacobs. Der Meister des Berswordt-Altares. Göppingen, 1983, pp. 7–8, 10, n. 4, 20–25, 113–14, 161–62, 209, 211,215–16, fig. 52, is inclined to view the altarpiece as a work paid for from the church's own funds rather than by a private donor; discusses Kornfeld's [Ref. 1933] identification of the Bielefeld Altarpiece with an altar devoted to the life of the Virgin and Saints Jerome and Ursula cited in a 1400 document, but finds it improbable that these saints appeared on exterior wings as Kornfeld suggests.
Eva Pieper-Rapp-Frick. "Der Flügelaltar der Bielefelder Marienkirche." St. Marien in Bielefeld, 1293–1993. Bielefeld, 1993, pp. 307–11, 341–42.
Brigitte Corley in The Dictionary of Art. 20, New York, 1996, p. 630, notes that "the uneven artistic quality [of the Bielefeld Altarpiece] suggests inexperience or workshop participation".
Brigitte Corley. Conrad von Soest: Painter among Merchant Princes. London, 1996, pp. 78–82, 216–17, dates the altarpiece 1400 and observes that it shows the signs of workshop collaboration; attributes the central "Sacra Conversazione," the Resurrection, and the Deposition to the dominant hand and the remaining scenes to workshop assistants; adds to the master's oeuvre a Saint Nicholas panel in the Saint Nicholas Chapel, Soest, noting that the same style of underdrawing appears in the Soest picture and in the Berswordt and Bielefeld Altarpieces.
Hans Georg Gmelin et al. Neustädter Marienkirche, Bielefeld. Munich, 1997, p. 10.
Brigitte Corley. "Zum Berswordt-Meister." Kunstchronik 54 (May 2001), p. 243, dates the Berswordt Altarpiece about 1431, comparing the strong geometric diagonals of its composition to the hesitant design of the Bielefeld Altarpiece, and noting that the underdrawing of the Berswordt panels shows a more practiced hand.
Alfred Menzel. "Der Bielefelder Marienaltar: Beobachtungen zu seiner Theologie." Der Bielefelder Marienaltar: Das Retabel in der Neustädter Marienkirche. Bielefeld, 2001, p. 28.
Götz J. Pfeiffer. "Das Marienretabel aus der Bielefelder Kirche St. Marien: Ein Hauptwerk des Berswordt-Meisters." Der Bielefelder Marienaltar: Das Retabel in der Neustädter Marienkirche. Bielefeld, 2001, pp. 33–40, 78, 140, 147–48, colorpl. 20, suggests that the altar's donor was Duke Wilhelm I von Berg, who died in 1408, and notes that the then canon of the Marienkirche, Gobelinus Person, suggests that the altar's donor was Duke Wilhelm I von Berg, who died in 1408, and notes that Gobelinus Person, canon of the Marienkirche from 1411, mentions Wilhelm in a poem published in his "Cosmidromius . . ."  as a good father and patron of the church, who ennobled it with the decorations he gave to it; adds that the Bielefeld church was the burial place of Wilhelm's ancestors, and that Wilhelm and his wife, Anna von Pfalz-Bayern, were particularly devoted to the Virgin and are documented as having donated other works of art in her honor; considers it more likely that the altar wings were sold rather than given to Krüger in 1840 and that the church used the payment to finance its reconstruction as an evangelical congregation, a process which had begun in 1837.
Heinrich Rüthing. "Das Bielefelder Kollegiatstift St. Marien um 1400." Die Bielefelder Marienaltar: Das Retabel in der Neustädter Marienkirche. Bielefeld, 2001, pp. 16–20, is inclined to believe Hermann Crusing (d. shortly after 1397), a native of Bielefeld and auditor in the service of the Papal court, commissioned the Bielefeld altarpiece; notes that a document of February 1400 associates him with an altar devoted to the Holy Cross and Saint Jerome, and that another document of November 1400 apparently mentions the same altar as devoted to the life of the Virgin, Saints Jerome, Ursula, and the Holy Cross [see Ref. Kornfeld 1933]; adds that no other benefactors are mentioned between the years 1389 and 1443.
Mary Sprinson de Jesús in Metropolitan Museum of Art Bulletin 59 (Fall 2001), p. 21, ill. (color).
Andrea Zupancic in Der Berswordt-Meister und die Dortmunder Malerei um 1400: Stadtkultur im Spätmittelalter. Bielefeld, 2002, pp. 165–66, 189, 213–15, ill. (color), notes that dendrochronological tests by Peter Klein indicate an earliest date of creation for the Bielefeld Altarpiece of 1391 and dates the Berswordt Altarpiece probably fifteen years earlier than the Bielefeld ensemble; repeats in detail the differing views of Rüthing and Pfeiffer (Refs. 2001) about possible donors, but appears to support Pfeiffer's choice of Wilhelm I, duke of Berg.
Kristina Bitzan in Sammlerlust: Europäische Kunst aus fünf Jahrhunderten. Gemälde, Zeichnungen und Kunsthandwerk aus einer westfälischen Privatsammlung. Exh. cat.Munich, 2003, p. 16 n.3, sees the Master of the Berswordt Altarpiece as more strongly influenced by the south Netherlandish sculptor, painter, and miniaturist, André Beauneveu, than by Conrad von Soest.
Brigitte Corley. "Re-inventing the Berswordt Master." Kunstchronik 57 (January 2004), pp. 36–38, 41, 43–44, questions the scholarly credibility of Refs. Pfeiffer 2001 and Zupancic 2002; notes that the Bielefeld panels vary considerably in style and quality and considers it most important that they be examined individually, addressing issues of workshop organization and division of hands; rejects Zupancic's dating of the Berswordt triptych before the Bielefeld Altarpiece; considers plausible Rüthing's (Ref. 2001) suggestion that the Bielefeld Altarpiece was a corporate foundation by the collegiate chapter, endowed at their own expense and therefore without legal documentation.
Brigitte Corley. "Die Werkstatt des Meisters des Göttinger Jacobi-Altars und die westfälische Malerei." Das Hochaltarretabel der St. Jacobi-Kirche in Göttingen. Göttingen, 2005, pp. 451–52, 467, calls the Bielefeld Altarpiece a collaborative production involving the Master and several workshop assistants, like the 1402 altarpiece in the church of Saint James, which she attributes to three separate hands; notes that despite significant stylistic and technical differences, both altarpieces are dependent on the works of Master Bertram and Conrad von Soest and share the colored shadows of Master Conrad; notes that in the case of the Bielefeld Altarpiece, these shadows appear only in the autograph panels of the Master.
Uwe Gast. "'Im Niemandsland': Alte Thesen und neue Ideen zu den stilistischen Voraussetzungen der Malereien des Retabels in St. Jacobi zu Göttingen." Das Hochaltarretabel der St. Jacobi-Kirche in Göttingen. Göttingen, 2005, pp. 438, 440, notes that the conception of space in the Bielefeld panels is much shallower than that of the 1402 altarpiece in the Church of St. James, Göttingen, and there are hardly any compositional similarities in these works, but sees some similar facial types, for example the large heads with broad cheekbones that narrow to a pointed chin.
Götz J. Pfeiffer. "'Etwas vom Löwen . . ., der Blut geleckt': Carl Wilhelm August Krüger (1797–1868) und seine Sammlung." Mitteilungen des Mindener Geschichtsvereins 77 (2005), pp. 128–32.
Iris Grötecke in Gotik. Munich, 2007, p. 433.
Götz J. Pfeiffer. Die Malerei am Niederrhein und in Westfalen um 1400: Der Meister des Berswordt-Retabels und der Stilwandel der Zeit. Petersberg, Germany, 2009, pp. 11–12, 14, 17–19, 22–23, 26–28, 37–38, 56–57,245–46, 248, n. 353, figs. [black and white] 4, 23 and 24 (appearance before 1956), colrpls. 17, 31, and in reconstruction inside back cover of book.