Books by W. Jos. de Gruyter:
Books in the extended shelves:
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Gruyter, W. Jos. de (Willem Josiah), 1899-1979: Study of Vincent van Gogh's selfportraits executed at St. Remy with reference to J.B. de la Faille's "Catalogue raisoné de l'oeuvre de Vincent van Gogh" (W. Scherjon, 1929), also by W. Scherjon, J.-B. de la Faille, and Vincent van Gogh (page images at HathiTrust)
Find more by W. Jos. de Gruyter at your library, or elsewhere.