THE GUINNESS BOOK OF RECORDS 1993 / by Matthews, Peter, editor 243683, McWhirter, Norris, 1925-2004 editor 386864

“…This annual publication has grown very considerably in extent and quality since Norris and Ross McWhirter compiled the first edition in 1955. Then man could barely have contemplated venturing into space, now we record the longest time spent away from the surface of the planet. …”