![](http://www.alamy.com/thumbs/6/10011E20-8F51-46EC-8D13-8EBA278DD671/2HB4E5P.jpg)
Further possibly an abklatsch of architectural studies. Page 4 from a sketchbook with 18 pages, Chessboard pattern, draughtsman: Willem Witsen, San Francisco, (possibly), c. 1910 - c. 1915, Willem Witsen, c. 1910 - c. 1915
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Photo credit: © Penta Springs / Alamy / Afripics
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Keywords: -, ., 4, 18, 1910, 1915, abklatsch, architectural, chessboard, draughtsman, francisco, page, pages, pattern, san, sketchbook, studies, willem, witsen