Information on Air Filters for the Library
Date
1959-04-20
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Abstract
From the very beginning, the entirety of the P.H. Welshimer Library was heated and cooled. This letter from an air conditioning company in 1959 describes the annual costs and amount of upkeep such a system would need per year.
Description
Keywords
P.H. Welshimer Memorial Library, Fall Exhibit 2021, Stahl, Ray