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."
39 x 56 cm. Relief shown by hachures. "Entered according to act of Congress in the year 1864, by A.J. Johnson in the Clerks Office of the United States for the Southern District of New York." Atlas page numbers in upper margin: 67-68. Primer meridians: Greenwich and Washington, D.C. On verso: History and statistical view of the West India islands or Columbian Archipelago and Historical and statistical view of Mexico and Central America. Shows proposed railroads, locations of Indian tribes, natural features, counties, mines, mail routes, trails and routes of exploring expeditions. Has decorative border. Southern part of Nevada was added to the state in 1867 and is part of Nevada on this map, but Lincoln County was established in 1867 and is not on this map. This map was still probably published in 1867 in spite of someone's having written "1864" in pencil in the lower right corner of the Library's copy. Original publisher: A.J. Johnson.
A biography of the musical group Sly and the Family Stone written by Epic Records in New York and given to the Sands Hotel in Las Vegas, Nevada for the Epic Records National Sales Convention. The seven-page biography lists all of the members in the group, and provides a small bio on each member; including information on their individual musical accomplishments.
A letter from Barbara Christensen, the manager for Press & Public Information for Epic Records in New York, to Al Freeman, the Sands Hotel Director of Publicity in Las Vegas, Nevada. The letter outlines the upcoming Epic Records, National Sales Convention, June 17-19, 1968, including information about the various musical artists that were performing.