Tina Modotti, Untitled (1rst of May Manifestation – Labor Day – taken from a balcony), 1927

Dorothea Lange, Hoe Culture, Alabama (Tenant Farmer near Anniston), from the Resettlement Administration, 1936, printed 1971; Collection SFMOMA, SFMMA purchase; © Oakland Museum of California, the City of Oakland, gift of Paul S. Taylor

Diego Rivera, The Flower Carrier, 1935; Collection SFMOMA; © Banco de Mexico Diego Rivera & Frida Kahlo Museums Trust, Mexico, D.F./Artists Rights Society (ARS), New York

Pirkle Jones, Keeping Records, from the series Death of a Valley, 1956, printed 1960; Collection SFMOMA; © Estate of Pirkle Jones

Reagan Louie, Bangkok, 1998; Collection SFMOMA; © Reagan Louie

August Sander, Bricklayer, 1928; Collection SFMOMA; © Die Photographische Sammlung/SK Stiftung Kultur – August Sander Archiv Köln/Artists Rights Society (ARS), New York

Andreas Gursky, Hong Kong Stock Exchange, Diptychon (Hong Kong Stock Exchange, Diptych), 1994; Collection SFMOMA; © 2008 Andreas Gursky/Artists Rights Society (ARS), New York/VG Bild-Kunst, Bonn; Courtesy Matthew Marks Gallery, New York, and Monika Spruth/Philomene Magers, Cologne/Munich

Sebastio Salgado, Untitled, Serra Pelada, Brazil, 1990; Collection SFMOMA; © Sebastião Salgado/Saif, Paris/VAGA, New York

Paul Strand, Wall Street 1915, from Camerawork, 1916; Collection the Sack Photographic Trust; © Aperture Foundation Inc., Paul Strand Archive