| Title | Letter from Thomas Bon Dapray[?], The Christiana, Apt. 21, 1829 California Street, N.W., Washington D. C. USA, to the Secretary, The Royal Society of Scientists, London, England |
| Description | Requests information about the inventor of "The Searchlight," a device claimed to help the deaf hear phone and regular conversations. The device, allegedly tested and approved by the Royal Society, has piqued his interest, and he wishes to assist the inventor, if the claims are true. Hopes for a prompt response with any available information about the invention.
Attached is a small newspaper article pertaining to telephone receivers. |