Inscription with image reads: "Fourth of July parade, 1906. Bradford & Bradford float. S.K. Bradford is standing behind the driver. May Bradford, sitting in the rear holds upright a surveyor's 'rod'. This was the last appearance of Bradford & Bradford Surveyors (as a firm) in Tonopah. They had divided up the proceeds, and all three left town the next day May for Europe, S.K. and Mrs. Bradford for a well earned vacation."

An image of children dressed up in costumes, possibly for the 4th of July at City Hall in Boulder City, Nevada. A young boy dressed as a miniature Uncle Sam stands within the center of the crowd of children, as girls donning festive dresses stand at the front.

The exterior of Hughes Research Laboratories where rock bits were test-drilled in Culver City, California in the 1940s. Transcribed from note taped to back of photo: "Rock bits are test-drilled in the laboratory under conditions that duplicate, as far as is possible in the laboratory, those encountered in actual drilling. As a result, rotational speeds, loads, and fluid volume are closely controlled. The rig operator occupies a splash-proof booth above the 'cellar floor.' The instruments on his control panel provide for application and measurement of variable axial loading on the drilling bit up to 100,000 lbs., variable rotational speeds up to 400 rpm, measurement of bit penetration over a total vertical travel of 5 feet at rates up to 180 ft. per hour, and torque. On the panel, also, are several controls for the operation of mud pump and other accessory equipment."