"Und die Moral von der Geschicht, In Zweifelsfällen kaufe nicht!" - Karl Geigy-Hagenbach about fakes and forgers in autograph collecting. His own legendary autograph collection is documented in "Autographensammlung von Karl Geigy-Hagenbach in Basel" (addenda 1933 and 1939). For J. A. Stargardt's "Der Autographen-Sammler" Geigy-Hagenbach wrote a series of articles about his passion from 1936 to 1938.