Co Rentmeester (Jakobus Willem Rentmeester; born 1936), Dutch rower and photojournalist
But after 18 months spent toiling in the traffic department at the Foote Cone & Belding ad agency, Gummer switched to magazine editorial, starting out as a fact-checker at GQ and later moving to LIFE, where he would write and produce photo essays with photographers including Harry Benson, Galen Rowell, Robb Kendrick, Bob Sacha, Theo Westenberger, Co Rentmeester, Taro Yamasaki, and others.