Not all of these shots are actually selfies. Some are. Others are photographers shot while working by their peers. They are all great pictures, in my book illustrate perfectly Ansel Adams' famous quote;
“There are always two people in every picture: the photographer and the viewer.”
Irving Penn, Cecil Beaton with nude, 1946
Felix Nadar & Adrien Tournachon, Pierrot photographer by the mime Debureau, 1854
André Kertész, Self-portrait, Paris, 1927
Nobuyoshi Araki, Self-portrait
Paul S. Taylor, Dorothea Lange pictured in Texas, 1934
Ed van der Elsken, Self-portrait with Ata Kandó, Paris, 1953
Edouard Boubat, Self-portrait with Lella, 1951
Germaine Krull, Self-portrait with Ikarette, 1925
Helmut Newton, Self-portrait with model, Hotel Bijou, Paris, 1973
Hank Walker
René Burri, Henri Cartier-Bresson, New York, 1959
Ilse Bing, Self-Portrait in Mirrors, 1931
Oscar Graubner, Margaret Bourke-White working a top the Chrysler Building, 1934
Annie Liebovitz, working a top the Chrysler Building, 2005
Lee Friedlander, Self-portrait, 1997
Weegee, Lisette Model, 1946
Willy Ruge, Arno Boettcher, 1927
Willy Ronis, Self-portrait, 1955
Vivian Maier, Self-portrait
Umbo (Otto Umbehr), Self-portrait with Leica, 1952
Sally Mann, Self-portrait, 1974
Gerda Taro, Robert Capa, Segovia Front, Spain, 1937
Jacques-Henri Lartigue, Richard Avedon, New York, 1966
Peter Seker, Walker Evans, 1935-1936
Martin Munkacsi
Robert Doisneau, La petite monique, 1934
(via Vintage Everyday)