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Duck-Rabbit optical illusion first published in Fliegende Blatter (Munich), October 23, 1892, p. 147. The same drawing, or a similar version, has subsequently been attributed to Joseph Jastrow (1899) and quite erroneously to Ludwig Wittgenstein (2002). The Fliegende Blatte version, by an anonymous artist, appears to be the oldest and first published version.
Jastrow's Duck-Rabbit drawing is based on an illustration published in Harper's Weekly (November 19, 1892, p. 1114). The Harper's Weekly drawing was based on a similar drawing published in Fliegende Blatter, Munich (October 23, 1892, p. 147).