Precipitation: Charts, graphs, and images, 1966-1973

(311B) Precipitation charts, various United States areas, April 28, 1966; (337B) Table: "Total and average precipitation reporting in the area between transmission source and Key West on days where Sporadic E was monitored, Summer 1964," copy, NCAR Photographics Lab date: May 23, 1966; (338B) Precipitation area, Puerto Rico, August 4-5, 1964; (341B) Eastern United States, precipitation on August 5, 1964, NCAR Photographics Lab date: May 23, 1966; (2065B) Charts relating to precipitation, atmospheric layers, and winds, October 26, 1973.