Robert Culnan describes his graduate education and teaching of the aviation cadet classes in meteorology at New York University (1940-1945). He discusses his 36 year career in the U.S. Weather Bureau (USWB), much of it working with Harry Wexler. He comments on the various programs and research developments of those years, including the Dobson network for ozone measurement; USWB support of university research; establishment of hurricane and severe storm research programs; advent of the International Geophysical Year (IGY); Dave Keeling's carbon dioxide studies; the weather satellite program; evolution of the USWB through the Environmental Science Services Administration (ESSA) and the National Oceanic and Atmospheric Administration (NOAA). He concludes by describing his youth and education, and earliest work for the USWB in California.