RR Auction: Fine Autographs and Artifacts featuring Science and Technology

Menu from the Jack of Clubs nightclub in London, 10 x 14.75, signed and inscribed inside in blue ballpoint, "To Jo, from Cassius Clay, Good Luc...

Fantastic vintage matte-finish 8 x 10 photo of the golf legend relaxing on a bench, neatly signed and inscribed in fountain pen, "For Ronald Wi...

Large circa 1935 guest book from the Newark Athletic Club, 10.75 x 12, signed prominently inside in fountain pen, "Babe Ruth, New York City.&qu...

Official Rawlings National League (Feeney) baseball signed in blue ballpoint on the sweet spot by Hank Aaron. In fine condition.

Cover from the December 23, 1974 issue of Sports Illustrated honoring Ali as Sportsman of the Year, showing the boxing legend looking dapper in a tuxe

Glossy 8 x 10 photo of Ali in his Everlast gear, signed and inscribed in black felt tip, "To Bootsie Kaat, love, Muhammad Ali, 3-29-88,” with a...

Glossy 8 x 9.5 full-length photo of Ali in a boxing pose early into his career, signed and inscribed in black felt tip, "To Bud from, Muhammad ...

Two items: a glossy 3.5 x 4.75 cardstock photo of Ali in a half-length pose smiling after a training session, signed in blue ballpoint, "Muhamm...

Color 8 x 10.75 magazine photo of Ashe for AMF sports equipment, signed in black ballpoint, "Cheers, Arthur Ashe." In fine condition, with...

Collection of 35 gold Hall of Fame plaque cards, individually signed in ink by the subjects. Includes: Lefty Grove, Bucky Harris, Hank Aaron, Stan Mus

Official Rawlings National League (White) baseball signed in ballpoint on the sweet spot and side panels by eight 300 game winners: Steve Carlton (ss)

Official Rawlings Adirondack baseball bat signed in blue felt tip on the barrel by ten World Series MVPs, all adding the years of their achievement (s

Limited edition official Rawlings American League (Budig) 'stat' baseball, numbered 36/158, signed in blue ballpoint on the sweet spot, &quo...

Two signatures of members of the infamous 1919 Chicago White Sox team: a vintage fountain pen signature, "Eddie V. Cicotte," on an off-whi...

Official Rawlings National League (Giamatti) baseball signed on the sweet spot and side panels in ballpoint by seven boxing greats, including: Bob Fos

Signed book: The TB12 Method. First edition. NY: Simon & Schuster, 2017. Hardcover with slipcase, 8.5 x 11, 305 pages. Signed on the colophon in...

Football player (1905–1942) who played for the Army college team and for the New York Giants and Brooklyn Dodgers franchises. He died as a result of a

French boxer, actor and World War I pilot (1894–1975) who fought mainly as a light heavyweight and heavyweight in a career lasting from 1908 to 1926.

French educator and historian (1863–1937) who is best remembered as being the founder of the International Olympic Committee, and its second President

ALS signed “Wahoo,” one page, 8.5 x 11, February 22, 1961. Letter to Jim Taylor, in part: "I am going along as usual & have a very nice set...