Date of Work
A hearing test is conducted using a Beltone Machine. A woman taking the test holds up fingers while a man hold the headphones on her head. Another man adjusts a dial on the machine.
Woman; Headphones; Beltone Machine; Hearing aids; Women; Headphones; Audiology - Instruments; Audiologist and patient; Audiometry; Men
North Dakota--Grand Forks; North Dakota
University of North Dakota
Elwyn B. Robinson Department of Special Collections, Chester Fritz Library, University of North Dakota