Germain, Karl (Charles Mattmuller). Two-Page TLS from Karl Germain to F.E. Powell. Feb. 18, 1926. Germain writes to his brother magician, “Dean” Powell, on myriad subjects, including both personal and professional matters. In discussing the use of giant cards in Powell’s show, and Powell’s invention of them, he states, “Almost all the innovations in magic during our time have been made by half a dozen men, the claims of all the rest of the rank and file are RANK and ought to be filed with a rasp, down to nothing. I have never made a fuss about the few things I have invented, but I’ve at all times made it as difficult as possible for the purloiners to get the necessary information.” Germain goes on to discuss his butterfly effect in some detail, and attempts to copy it by others, as well as Martinka’s attempts at manufacturing a version of the apparatus. Two 4to sheets. Old folds. Boldly signed “Karl Germain.”