What is this thing called air-conditioning
Publisher: [Holland Furnace Co.]
Published: 1931
Place of publication: Holland, Mich.]
Language: eng
Subjects: Catalogs; Air conditioning; Humidity; Control; Equipment and supplies; Heating; Ventilation; Holland Furnace Company
Notes: Caption title.

Chart is dated Nov. 24-25, 1931.

Includes 36, [1] leaves of mimeographed typescript with ill. and charts laid down, and [7] leaves of advertisements for Holland air conditioning systems.