A short story by Andre Norton. Quite different for its time period with a knowledgeable female protagonist and her grey cat. The fact that all Cats are gray has nothing to do with the color of the cat, but the fact that they see in gray scale.
Edwin A. Abbott, Edgar Rice Burroughs, John Wood Campbell, Raymond King Cummings, Arthur Conan Doyle, Tom Godwin, Andre Norton, H. Beam Piper, Mack Reynolds, Mary Shelley, E.E. Doc Smith, Jules Verne & H.G. Wells
Johnston McCulley, Robert J. Hogan, Clarence E. Mulford, Bill Anson, Lee Bond, Carmony Gove, Ben Frank, T. W. Ford, Andre Norton, Lon Williams, J. Allan Dunn, Bret Harte, Luke, Short, Thomas Thursday, Owen Wister, B. M. Bower, Robert E. Howard & Jackson Cole