Exceptionally scarce handwritten, signed note in fountain pen, dated 1956, on a 5x7-inch sheet of pale gray stationery. Accompanied by its original mailing envelope. In good condition for its age, with a horizontal mailing fold and one or two negligible handling dings. The effete English supporting actor of the 1930s through 1960s is remembered by horror and sci-fi fans for his portrayal of Jake Long in the Ed Wood cult classic Bride of the Monster (1955), released just a year before this letter was written. Warren's autograph is practically non-existent in any format and, to our knowledge, this is the first example to ever hit the market.