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This is a repository of the minutes and records of the local chapter 157 of the Laborers' International Union of North America.

The Sheet Metal Workers International Association, Local 83 Records document the day-to-day operations of the union from the years 1892-1984 using meeting minutes and other documents refrenced in the minutes including correspondence, treasurer's reports, newsletters and strike bulletins.

United Association of Journeymen and Apprentices of the Plumbing and PipeFitting Industry of the United States and Canada, Local 105 Records document the regular business of this chapterof the union, including meetings, financial reports, grievance reports, and membership.

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.