Mystic_Seaport Several articles by "Wooden Boat" magazine on S, R, Q, P, M and J Classes. WoodenBoat Magazine www.woodenboat.com "The Twelve Metre Yacht: Its Evolution and Design 1906-1987",Chris Freer "The America's Cup: The History of Sailing's Greatest Competition in the Twentieth Century" by Dennis Conner (Author), Michael Levitt (Author), 1992 " Olin J. Stephens II. Lines: A half-century of Yacht Designs by Sparkman & Stephens, 1930-1980.", 2002, David R. Godine, . "Vim" a Twelve Meter Design by Sparkman and Stephens "Aero-hydrodynamics of sailing", Czesław Antony Marchaj, "1928 IYRU London Conference" "Biography Norman l Skene by John G Evans", Sciences 360 www.sciences360.com References Handicap (sailing)