Marcel Duchamp’s window display (the mannequin is his 'Lazy Existence') at the Gotham Book Mart, NYC for André Breton’s 'Arcane 17' in 1944. Maya Deren took the photograph, capturing Breton himself reflected in the window.

Modernist artists and NYC window dressing seems to have been quite a thing. Here's Robert Rauschenberg and Jasper Johns' window for Bonwit Teller, 1950 (the Duchamp piece in the previous tweet is of course 'Lazy Hardware', the lazy existence is entirely mine).

Tom Lee's Bonwit Teller window c. 1938

Bonwit Teller early 1940s by Dali

Andy Warhol’s Bonwit Teller window, 1957. All the photos in this thread are from 'The American Store Window' by Leonard S. Marcus, 1978.