Black and white glossy photograph of three Oakland Oaks baseball players. Photo shows all three in the various processes of catching a baseball: Jimmy Herrera (left) has just caught a ball; Jake Caulfield (center) is scooping with his hand and glove and is in the process of catching a ball; and Chet Rosenlund (right) is preparing to catch a ball as he watches the ball heading toward him. All three are in full uniform that includes white pants, white jerseys with "Oaks" written on the front and dark socks and caps (no insignia on the caps). They are on a grass field and there are billboards on the fence behind them. Caption affixed to back reads: "Three of last season's infielders are still holding down positions with the Oaks. Jimmy Herrera (left) is the second sacker, Jake Caulfield (center), is at short, and Chet Rosenlund (right) is the regular third sacker. They will be seen in action today at the Emeryville ball yard against Portland." Player's uniforms have been outlined and shaded for reproduction purposes.