From the Margret and Hans Augusto Rey Papers.; Diagram/illustration of "folding animals," created by H.A. Rey and produced by Hachette (France) publishing company (1937). 8.5" x 13"
From the Margret and Hans Augusto Rey Papers.; Cover page of the patent for "folding animals" created by H.A. Rey and produced by Hachette (France) publishing company (1938). 9.5" x 12"