RR Auction: Sports Auction

First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in fountain pen, "Mel Ott." Encaps...

First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in dark blue ballpoint, "Charles A. Kid...

First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in fountain pen, "Tris Speaker." I...

First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in blue ballpoint, "A. C. 'Dazzy...

First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in fountain pen, "Lloyd Waner, Pirates,...

Offered is a mailed and canceled US Government postcard signed by the great Cy Young. The card was mailed to Cy Young by a collector in New York, for

Handwritten letter signed “J. Franklin Baker,” one page, 5.5 x 8.5, March 8, 1956. Letter to "Mr. Browne," in part: "I received your ...

Handwritten letter signed “Fred C. Clarke,” one page, 8.5 x 11, personal letterhead, January 19, 1940. Letter to Dr. C. J. Stern, in full: "I w...

Handwritten letter signed "Mickey Cochrane," two pages, 6 x 9.5, The Hollenden Hotel letterhead, May 16, 1931. Letter to Kathryn L. Drough...

Union general (1819-1893) who commanded a division at Gettysburg; he has controversially been credited with the invention of baseball. Civil War-dated