Western Electric 1-A Audiometer in use, circa 1920s.
Woman demonstrating the Rhodes Audiophone while holding the Folding Dentaphone, front view, circa 1926.
Woman demonstrating the Rhodes Audiophone while holding the Folding Dentaphone, side view, circa 1926.
Four men seated at a table in the CID library demonstrating the Desk-top hearing instrument, circa 1926.
Man modeling hearing device and battery harness attached to undergarments, for Sonotone advertisement, circa 1950.
Woman modeling hearing device and battery harness attached to undergarments, circa 1950.
Photo of Rein Aurolese Phones advertisement, circa 1900.
CID teacher with student, 1930s
Photograph of framed note from L.V. Rein, no date.
S. Richard Silverman and Agnes Moorehead, circa 1950s.
Hal-Hen advertising photo, ca. 1952
Beltone eyeglass aid photo, 1960
Man modeling a hearing device in a vest pocket, for Sonotone advertisement, circa 1950.
Woman wearing decorative earring, for Sonotone advertisement, circa 1950.
Conversation tube, 1796 or 1805.
Phonac Model C, ca. 1928
Acousticon Model 56, ca. 1928
"Staniland" model canteen receptor.
London dome hearing trumpet, 19th century
London dome hearing trumpet, 19th century