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Otto and Cläry Bartning, Karlsruhe, by whom acquired directly from the artist circa 1942, and thence by descent to the present owner.
A. Heilborn, Käthe Kollwitz, Berlin, 1949, p. 89 (plaster version illustrated).
M.C. & H.A. Klein, Käthe Kollwitz, Life in Art, New York, 1975, p. 140 (plaster version illustrated).
H. Guratzsch, Käthe Kollwitz, Druckgraphik, Handzeichnungen, Plastik, Bonn, 1990, no. 59 (another cast illustrated p. 62).