During Schirra's White House visit after his Sigma 7 flight, President Kennedy presented him with this folio that contained a sheet of Project Mercury 4-cent stamps. SIGNED BY PRESIDENT JOHN KENNEDY on the interior cover. [With:] NASA 8 x 10 inch b&w photo of the Schirra family visit at the White House. (2)" /> [KENNEDY WHITE HOUSE VISIT]. <I>Approx. 10 x 12 in. stamp folio. The cover has gold embossed printing that reads: "4-Cent Project Mercury Commemorative U.S. Postage Stamp, Cmdr. Walter Marty Schirra, Jr."</I> During Schirra's White House visit after his <I>Sigma 7</I> flight, President Kennedy presented him with this folio that contained a sheet of Project Mercury 4-cent stamps. SIGNED BY PRESIDENT JOHN KENNEDY on the interior cover. [With:] NASA 8 x 10 inch b&w photo of the Schirra family visit at the White House. (2) | Christie's