RR Auction: Fine Autographs and Artifacts featuring Science and Technology

Warren Buffett's personally-owned and -used set of golf clubs, comprising his customized golf bag and fourteen clubs, given to the one-time fian...

ALS in French, one page, 5.25 x 8, Montreaux Palace Hotel letterhead, September 30, 1925. In full (translated): "All my thanks, dear Mr. Bernst...

ALS in German, signed “Freud,” penned on the reverse of a 4 x 2 business card belonging to the recipient, his assistant, Dr. Paul Federn, January 2, 1

ALS signed “Freud,” one page both sides, 9 x 11.25, personal letterhead, November 5, 1935. Letter to Austrian writer Stefan Zweig, about the Nobel Pri

Influential German philosopher (1770–1831) who espoused a dialectical method by which an idea (thesis) was challenged by its opposite (antithesis) and

Russian geographer, zoologist, and political theorist (1842–1921) best known for his advocacy of anarchist communism. ALS signed “P. Kropotkin,” three

English scholar influential in the fields of political economy and demography (1766–1834). ALS signed “T. Robt. Malthus,” one page both sides, 7.25 x

French early socialist theorist (1760–1825) whose thought influenced the development of the philosophy of science, discipline of sociology, positivism

Rare German-language ordination card for Joseph Ratzinger, 2.75 x 4.25, showing an image of the young priest above with dates of his ordination below,

Desirable glossy 6 x 8 full-length photo of Pope John XXIII blessing a row of men at a Roman hospital, affixed to the original 9.25 x 12.5 presentatio

Born Eugenio Maria Giuseppe Giovanni Pacelli (1876-1958), he served as pope from 1939 until his death. TLS in Italian, signed “E. Card. Pacelli,” one

Statesman, author, orator, political theorist, and philosopher (1729–1797) who, after relocating from Ireland to England, served for many years in the

Notable pair of ALSs in Spanish, both signed "F.," no date, both 6 x 6.5, both addressed to Generals Arnaldo Ochoa and Polo Cintra Frí...

Premier of the People's Republic of China (1921–2008) who served from 1976-1980; he was eventually outmaneuvered by Deng Xiaoping, who forced Hu...

Political leader (born 1928) who served as premier of the People's Republic of China from 1987 through 1998, best known for declaring martial la...

Founder and first President of Czechoslovakia (1850–1937). ALS signed “T. G. Masaryk,” one page both sides, 6.75 x 8.25, December 27, 1931. Letter to

British politician (1718–1792) who held a number of important positions, but remains best known as the namesake of the sandwich. ALS signed “Sandwich,

Exceedingly rare ALS in Cyrililc, one page, 5.25 x 7.75, February 5, 1939. Letter to his thirteen-year-old daughter Svetlana, facetiously couched as a

Attractive matte-finish 8.25 x 10.75 photo of a painting of Peron with a large flower on her lapel, affixed to a 12.5 x 16.5 mount, calligraphically i

Color 4.5 x 6.5 magazine photo of Svetlana Alliluyeva posing with her son Iosif in the mid-1950s, matted to a slightly larger size, signed on the mat