Autograph - Alexander Graham Bell (1847-1922) American

Autograph - Alexander Graham Bell (1847-1922) American inventor of the telephone Signed Postcard - on a pre-stamped postal card to P. D. Richards, a neighbour, friend, and scientific associate who collaborated with Bell in the development of early liquid transmitters that could transmit multiple telegraph messages Nov 30 [1887?] ‘Yr. letter received with my thanks. I think the paper must allude to some Spiritual Medium. At all events the whole thing is worded so as to make me feel sceptical [sic]. I want to see you very much. I shall be at 18 Beacon St. all Saturday.' Along the left margin, Bell adds: ‘Couldn't we dine together on Saturday?' with signature at end, Bell formed the Bell Telephone Company, and established the Volta Laboratory which produced numerous related inventions and improvements on existing technology. Measures 13x7cm approx.