Weather: Historical forecasting manuals, 1940-1943

This file contains the following manuals: Weather Forecasting, with Introductory Note on Atmospherics, Sixth Edition, George S. Bliss, U.S. Department of Commerce, Weather Bureau, 1940; Forecasting from Synoptic Weather Charts, Richard Hanson Weightman, issued June 1936, revised June 1940; Instructions for Making Pilot Balloon Observations, Circular O, Aerological Division, U.S. Department of Commerce, Weather Bureau, 1942; Meteorology for Pilots, Second Edition, B. C. Haynes, Civil Aeronautics Bulletin No. 25, January 1943.