San Francisco, CA: Camera Craft Publishing Company, 1938. First edition and first printing. Hardcover. 127 pages. A technical guide by Mortensen that includes numerous black and white images. A clean and tight near fine copy in orange cloth boards with a small vintage camera store label to the rear pastedown in a close to near fine dust jacket that is lightly soiled, with a few tiny edge chips and some edge tears. Uncommon in the first edition and dust jacket.