Photograph of a bulldozer at work on the Pershing Square parking garage in Los Angeles, 1951. The bulldozer is at center and is moving a pile of dirt. An open-air pickup truck can be seen at right, while two large segments of pipe are visible at left. A truck with a tall crane mounted on the back is visible in the distance at center. In the background, several tall buildings can be seen.; Legible signs include, from left: "Hotel Clark", "Hotel Portsmouth", "Coldwell Banker & Company", "Eastside", "Walt's Auto Park", and "Cafeteria Boos Bros".