Flight Data and Research, 1946-1953, Undated

This subseries contains materials on specific flights, though the availability of data ranges from a single page for some flights to multiple pages with photos for other flights. Each one is labeled by flight number, where it took place, what operation was performed, and on what date. There are also files on research efforts that took place on the ground and in the lab, including charts, diagrams, weather observations, and research notebooks. Photographs include particular flights, most of which feature aerial cloud views, but there are also general photos that were not labeled by Schaefer or his colleagues.

Researchers will also find documents on two extra Project Cirrus missions, one dealing with Hurricane King and the other with Operation Red. Both pursuits took place in the fall of 1947. The former related to cloud seeding a hurricane in order to expend its energy before it made landfall while Operation Red focused on cloud seeding over wildfires in New England. The Hurricane King effort is not to be confused with the Hurricane King of 1950; the Project Cirrus crew named the 1947 hurricane on their own but did not have a title from official weather bureaus.

Please note that Schaefer's preliminary materials on cloud seeding, as well as data and photos from his 1946 cloud seeding flights, are located in Series #1 because they took place before the official creation of Project Cirrus in 1947.