The Condor: Journal of the Cooper Ornithological Club. Volume 50 Nos. 1-6, 1948. The complete Fiftieth Anniversary Volume in original wrappers. Each number features a color frontispiece by Allan Brooks: heads of Zone-tailed Hawk, Pied-billed Grebe, Re-tailed Hawk, female Coppery-tailed Trogon, Cooper Hawk, and a full size juvenal Saw-whet Owl. Along with a wealth of articles of interest. there are several additional b&w sketches by Brooks.