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This entire collection has been acquired by William F. Austin, Chairman of Starkey Laboratories for inclusion in his HQ Museum of Antique Hearing Devices, Eden Prairie, MN.
EarTrumpet.com
Antique Hearing Instruments
From the collection of Roy F. Sullivan, Ph.D.
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![Kircherellipsis]_edited.jpg](https://static.wixstatic.com/media/809744_31aca2dab12c40b4aa1208458fb5564e~mv2.jpg/v1/fill/w_302,h_134,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/Kircherellipsis%5D_edited.jpg)