Surveyor 1 was the first spacecraft launched in the Surveyor program and the first soft landing on the Moon by the United States. The mission was considered a complete success and demonstrated the technology necessary to achieve landing and operations on the lunar surface. The primary objectives of the Surveyor program, a series of seven robotic lunar softlanding flights, were to support the coming crewed Apollo landings by: (1) developing and validating the technology for landing softly on the Moon; (2) providing data on the compatibility of the Apollo design with conditions encountered on the lunar surface; and (3) adding to the scientific knowledge of the Moon. The specific primary objectives for this mission were to: (1) demonstrate the capability of the Surveyor spacecraft to perform successful midcourse and terminal maneuvers, and to achieve a soft landing on the Moon; (2) demonstrate the capability of the Surveyor communications system and Deep Space Network to maintain communications with the spacecraft during its flight and after a soft landing; and (3) demonstrate the capability of the Atlas/Centaur launch vehicle to inject the Surveyor spacecraft on a lunar intercept trajectory. Secondary objectives were to obtain engineering data on spacecraft subsystems used during cruise, descent and after landing. Tertiary objectives were to obtain postlanding TV pictures of a spacecraft footpad, the surface material immediately surrounding it and the lunar topography, and to obtain data on radar reflectivity and bearing strength of the lunar surface and on spacecraft temperatures.

References
http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1966-045A