Clouds: Cumulonimbus clouds, 1969-1984

(879) Cumulonimbus clouds, shot from tree patio, August 5, 1969; (1273BC) Mammatus and cumulus nimbus clouds, October 5, 1971; (1354BC) Clouds, seven internegatives, cumulus nimbus, aerials of anvil top clouds, April 6, 1972; (1368BC) Clouds, cumulus nimbus, thunderstorm on July 9, 1970, copies, April 28, 1972; (1440B) Copy, cumulus nimbus cloud, Grover, Colorado, January 10, 1973; (1535) Clouds, cumulus nimbus and antenna, seven copies, April 26, 1972; (1768BC) Cloud, cumulus nimbus, copy, March 13, 1973; (1791B) Copy, cloud, cumulus nimbus, aerial from underneath, March 28, 1973; (1848BC) Copy, clouds, cumulus nimbus, May 9, 1973; (2072BC) Storm clouds, cumulus nimbus, June 21, 1972, photographed by Brant Foote; (2173B) Clouds, cumulus nimbus, January 29, 1974; (4591B) Cumulus nimbus cloud build-up, composite made from air-air shots, May 16, 1978; (4683B) Copies from aerials, tower clouds, cumulonimbus clouds, July 10, 1978; (6302B) Cumulonimbus cloud, developing anvil, copy, June 7, 1984.