J. C. Kofoed (1897-1979)
Thrill Book Vol. I No. 1, March 1, 1919Donovan Bayley, J. Hampton Bishop, Will Gage Carey, Harold Hersey, J. C. Kofoed, Greye La Spina, Feodor Vladimir Larrovitch
Thrill Book Vol. I No. 2, March 15, 1919J. Hampton Bishop, Harold Hersey, J. C. Kofoed, Albert Owens, Howard Dwight Smiley, Clare Douglas Stewart