Media type: Article Title: How to Hold a Camera : Harry Callahan's Early Abstractions Contributor: Fay, Brendan [Author]; Callahan, Harry M. [Illustrator] Published: 2015 Published in: History of photography ; 39(2015), 2, Seite 160-176 Language: English Keywords: Callahan, Harry M. > Abstrakte Fotografie Callahan, Harry M. Origination: Footnote: