5 x 7 nitrate negative photographed by Rosenfeld and Sons on June 24, 1920. Image of 110.33' Charles E. Nicholson designed, Camper & Nicholson built cutter SHAMROCK IV (built 1914 in Gosport, England) off Sandy Hook during early tuning trials for 1920 America's Cup. Visible in image: port side deck view of the cutter SHAMROCK IV on starboard close reach with mainsail, staysail and jib raised, crew seen aboard tending to the lines, a woman is seen in the cockpit with the captain and mate, decorative sternboard visible. Photo was taken from the deck of Sir. Thomas Lipton's steam yacht, ERIN. For more information see: A CENTURY UNDER SAIL, text by Stanley Z. Rosenfeld, page 41. CREDIT LINE: Mystic Seaport, Rosenfeld Collection. Handwritten on original negative sleeve: "4138-F / 6/24/20 / C.U.S. / Shamrock IV / off Sandy Hook".