The Vincent J. Schaefer Papers represent the professional accomplishments and personal interests of the scientist who discovered cloud seeding. Schaefer spent more than 20 years with General Electric in Schenectady, New York, working his way up from apprentice, to research assistant, to research associate. In those years he was mentored by Irving Langmuir, Nobel Prize winner in chemistry. The work Schaefer did at General Electric laid the foundation for further success as he became director of research for the Munitalp Foundation, began a highly successful summer science program for high school students, acted as an independent consultant, and founded the Atmospheric Sciences Research Center at the State University of New York at Albany. This collection contains research data, notes, correspondence, publications, and photographs that showcase Schaefer's long, industrious scientific career as well as highlighting his many hobbies in local history and environmentalism.