10 images. Satellites, 5 March 1958. Instruments contained in missing Explorer 2; Tape recorder designed to send cosmic ray data from satellite to scientists; Jupiter "C"; John Small (Chief missile engineer); Geoffrey Robillard (Solid propellants); William H. Pickering; Doctor Lee A. Dubridge.; Caption slip reads: "Photographer: Lapp. Date: 1958-03-05. Reporter: Hartt. Assignment: Jet. 13/14: John Small, chief missile engineer. Jupiter C. 5: Geoffrey Robillard (solid propellants). 23/57/58: Crowd, Walt William H. Pickering talking. 24: at map. 51/52: Dr. Pickering pointing to orbit of sat. 45/46: Dr. Lee A. Dubridge and Dr. William H. Pickering, and victory smile".