In the early 1940s, George Carl Wilhems worked through the Binder and Sangor shops. During this period, he drew for Fiction House, doing among others 'Double-Slango Kids' in the Rangers of Freedom comic book, and other features like 'Camilla', 'Crash Barker', 'Gale Allen', 'Parachute Patrol' and 'Tabu'. He also contributed to Real Life Comics by Better Publications. An Army veteran of World War II, Wilhelms worked for the American Comics Group (ACG) in the 1950s and 1960s. He drew among others for the mystery comic books 'Forbidden Worlds' and 'Operation Peril' (the 'Time Travelers' series). Afterwards, he contributed to Gold Key's 'Twilight Zone'.