RR Auction: Science and Technology Auction

Pioneering British mathematician and mechanical engineer (1791–1871) whose Difference Engine and Analytical Engine are generally acknowledged as the f

TLS, one page, 8 x 10.5, Beinn Bhreagh letterhead, August 4, 1920. Letter to Paul Brockett at the Smithsonian Library in Washington, D.C., in full: ...

ALS signed “S. C.,” one page both sides, 8.25 x 10.75, March 17, 1854. Heavily edited draft of a letter addressed to J. Santhill in Brussels, in part:

Prolific American inventor (1873–1961) often referred to as 'the father of radio' for his pioneering work in wireless telegraphy. AMS, two p...

TLS, one page, 8.5 x 11, Lee de Forest Laboratories, Inc. letterhead, February 20, 1943. Letter to George Shanks. In part: "I have always regar...

Draft ALS in pencil, signed “E,” one page, 8.5 x 11, June 23, 1923. Edison's response to a letter sent to him by the Reinbold Metallurgical Comp...

Partly-printed DS, signed “Thos. A. Edison,” one page, 8.5 x 3.75, February 28, 1921. Edison Storage Battery Co. promissory note, in part: "On ...

Scarce twice-signed partly-printed DS, signed “Thomas A. Edison” and "Thos. A. Edison," one page, 11 x 7.75, December 2, 1904. Edison Stor...

Letter to Thomas Edison from his son Charles, endorsed at the top by Thomas Edison in pencil, “OK if no fire risk to us, E,” two pages, 8.5 x 11, Sept

ANS signed “E,” one page, 5 x 8, no date. Note to "Blinne," concerning the disposition of Edison records that did not pass quality control...