Terrific phonograph-related TLS signed “Thos. A. Edison,” one page, 8.25 x 11, December 26, 1918. Edison writes to Admiral G. E. Burd at the Brooklyn Navy Yard. In part: “Let me thank you for … enclosing a letter from the Construction Officer at the Boston Navy Yard about the performance of my battery on the Floating Crane. It is a very satisfactory letter, and I am highly pleased with it. Mr. Wolfe has told me that you are making fine progress at the Navy Yard on the rig for the listening device…. I shall look forward with interest to your promised comments on the records that you have been receiving of late. I cannot tell you how greatly relieved I am to have you say that the surface of the recent issues has so noticeably improved. Perhaps you may know that I am not given to worrying, but I must admit that I have been worried about the poor surface on records for the last year or so, more especially so as I was devoting all my time to Government work and could not give any personal attention to the phonograph business.” In fine condition, with folds and a few corner creases, pinholes, tiny edge tears (tape-repaired from the reverse) and a few small spots of soiling, the faults quite minor and scarcely detracting from the overall appearance. R&R COA.