S. Mrożewski's ex-libris for E. Chwalewik, 1942

[CHWALEWIK Edward]. Ex libris by Edward Chwalewik.
Woodcut on ark. 11.3x9.1 cm. Sorrowful Christ, in the background Sigismund's Column and the burning Royal Castle in Warsaw - composition by Stefan Mrożewski, 1942, signed on the woodblock with bound monogram M.S. Traces of glue on the back of the upper edge, small loss of the upper corner.
E. Chwalewik (1873-1956) was a librarian, bibliophile, book historian, co-founder of the Society of Polish Bibliophiles. Chwalewik's book collection (numbering some 4,000 volumes, mainly on economics, history, literature) was partially burned during the Warsaw Uprising. "His works of documentation and exlibrisology became a model and reference for many later studies" (Wikipedia).