Niwot Ridge, 1966-1987

(145) Niwot Ridge aerials, November 28, 1965; (183, 184C) Niwot Ridge ground views, March 18, 1966; (549) Niwot Ridge in February 1968, snow, personnel, mountains, March 5, 1968; (554C) Niwot Ridge in February 1968, March 11, 1968; (567C) Niwot Ridge, mountains, personnel, location, equipment, Richard Friesen, March 25, 1968; (878) Niwot Ridge instruments, July 29, 1969; (906C) Niwot Ridge, August 4, 1969; (5222) Niwot Ridge and PAM disassembly, March 1980; (7122) Instrumentation on Niwot Ridge, July 17, 1987.