Callahan Class at Indiana Dunes (Excursion of Harry Calahans photo class), 1948 / © Bauhaus Chicago Foundation (unknown photographer)

Callahan Class at Indiana Dunes (Excursion of Harry Calahans photo class), 1948 © Bauhaus Chicago Foundation (unknown photographer)

Callahans Class at Indiana Dunes (Exkursion der Fotoklasse mit Harry Callahan), 1948