David Gahr (1922-2008) took the pictures of Gene Paul and Geffrey Haslam. He was an American photographer, born in Milwaukee to Russian immigrant parents. He studied economics at the University of Wisconsin in Madison and served in the infantry in Europe in World War II. He was one of "the pre-eminent photographers of American folk, blues, jazz and rock musicians of the 1960s and beyond."
His photographic output includes more than five decades of musicians such as Phil Spector, Bob Dylan, Miles Davis, Bruce Springsteen, Van Morrison, Janis Joplin, Sonny Terry, John Lennon and Pete Seeger. His book, The Face of Folk Music (Citadel Press, 1968) with writer Robert Shelton captured the exploding American Folk music scene, with hundreds of images including Dylan, Seeger, Joan Baez, Judy Collins, Tom Paxton, Phil Ochs, Odetta, Buddy Guy and Junior Wells, Mary Travers and Johnny Cash, among others. His work appeared prominently in Crawdaddy.
Dozens of Wikipedia pages include references to Gahr's photographs, such as those of Doc Watson, Stevie Ray Vaughan, etc.
Gahr died in Brooklyn, leaving a son and a daughter, Carla Gahr (also a NYC-based photographer, who, with her father, managed the David Gahr photography studio and archives).