Collection contains the records of the Middletown Scientific Association, spanning the years 1871 to 1976. These records document the proceedings of meetings from the association's founding in 1871 until its cessation in 1968, the administration of the association, and its association with the town of Middletown and Wesleyan University. Included are minutes, meeting announcements, treasury and presidents' reports, clippings, a scrapbook, and other historical materials. Of note are the announcements and clippings regarding talks given to the association by prominent scientists such as Italian physicist and Nobel Prize winner Enrico Fermi in 1940, and the association's resolutions on matters effecting the scientific community at large.