Behind the Back of the Gods by László Moholy-Nagy - 1928

Woman Seen from the Back (detail) by Onésipe Aguado de las Marismas, ca. 1862

Hamburg Docks by El Lissitzky, 1926

Runner in the City by El Lissitzky, 1926

Back of Hand & Shrivelled Apple. To illustrate the origin of certain mountain ranges by shrinkage of the globe, James Nasmyth, c. 1870

Children with Swans in a Hole, anonymous, c. 1900

Human and Gorilla Skeletons at the Table by Carl Huth - 1878

Hedy Pfundmayr Wearing an Elektra Mask by Rudolf Koppitz, Triptych, 1928

Heavy Burden by Rudolf Koppitz - c. 1930

Bewegungsstudie (Movement Study) by Rudolf Koppitz (with border) - 1925

Legs on a Lake by Rudolf Koppitz - c. 1930

Ruderboot by Rudolf Koppitz - c.1930

Nude at the seaside (Anna Koppitz) by Rudolf Koppitz, 1923

Harlem Effigy by Rich Allen, c. 1976

El Topo, 6th Ave, NYC by Rich Allen - 1972

Blind Leading the Blind 3rdSt, NYC - 1972

At The Hydrant in NYC by Rich Allen, 1972

Sophie's Friends by Rich Allen, NYC, 1972

The Universal Exhibition, Paris by Félix Thiollier, 1900

Fight on 42nd Street New York by Rich Allen, 1970s

Man Hit by Van on 42nd Street New York by Rich Allen, 1970s

The 4 Horseman Brooklyn Bikers by Rich Allen, 1970s

Sleeping Cop on Court Street New York by Rich Allen, 1970s