H79.142.12R

Photograph. Description: r. Checkered truck; five men kneeling in foreground. Back has inked words: "Ground Control Approach Navy radar apparatus to guide airplanes in blind landings at the Oakland Municipal Airport...developed by Luis W. Alvarez and Lawrence Johnson at University of California. Creased. 8 x 10". Condition: very good, except as noted. Remarks: see others in collection & history on page 1. Navy radar apparatus to guide airplanes in blind landings at the Oakland Municipal Airport when ceiling and visibility are zero. Known at "Ground Control Approach," and used by naval Air Transport Service after being developed by Luis W. Alvarez adn Lawrence Johnson, physicists with the University of California