FILE - In this May 11, 1963 file photo, President John F. Kennedy, left, discusses drawings with Washington architect John Warnecke as they look over a possible site for a library to house his public papers near Harvard University in Cambridge, Mass. Warnecke, the architect who designed President John F. Kennedy's grave site at Arlington National Cemetery, has died. He was 91. Warnecke's son, Fred, said his father died on April 17 of complications from pancreatic cancer at his home in Healdsburg, Calif. (AP Photo, File)