Clouds: Cirrus clouds, 1965-1986

(127) Clouds, jet trails forming cirrus clouds, November 1, 1965; (777) Cirrus clouds over NCAR to west, building and mountains, March 28, 1969; (797C) Contrails, cirrus clouds, April 22, 1969; (924) Cirrus clouds, south of Table Mesa, south Boulder, September 8, 1969; (953C) Cirrus clouds, Canyonlands, Utah, November 6, 1969; (1120) Cirrus fibratus clouds, from NCAR 8:00-9:00am, August 5, 1970; (1133) Cirrus uncinus clouds, Broomfield, 7:30 am, August 26, 1970; (6837C) Cirrus clouds, halo around the sun, July 21, 1986.