What people say has made the acousticon / General Acoustic Company.

Jamaica, New York City : General Acoustic Company, [1915]

15 pages ; 16 x 23 cm

A booklet of testimonial letters extolling the efficacity of General Acoustic Company's "Acousticon" hearing aid

Printed on thin paper with the text showing through each page from one side to the other.

Copy 1 Supplier/Donor: The Doctor's Library, Jersey City, N.J