The earliest known version is an unattributed drawing from the 23 October 1892 issue of Fliegende Blätter, a German humour magazine. It was captioned "Welche Thiere gleichen einander am meisten?" ("Which animals are most like each other?"), with "Kaninchen und Ente" ("Rabbit and Duck") written underneath.
From Library of Congress-1973
A416879 Stanley M. Nelson & Leslie W. Kangas. Rab-Pen-Duck Enterprises© Wise Quacks by Bunny-Duck. In Lucerne Valley, Ca. leader Appl. Authors: Stanley M. Nelson & Leslie W. Kangas. Rab-Pen Duck Enterprises©. ©9Nov72; BB42360 ©16Nov72;BB42381
|Wikimedia Commons has media related to Rabbit–duck illusion.|
- The illusion in Fliegende Blätter at the University Library Heidelberg
- Rabbitduck, a sculpture by Paul St George
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