Woodland Hills, Ca., 1997. 206p., 10" x 7 1/2", softcover, illustrated, very good. 2nd edition. "Book No. 73." Signed by the author. AND Dethlefson, Ronald. EDISON BLUE AMBEROL RECORDINGS 1912-1914: Companion Edition. (Woodland Hills, CA:, 1997). 47p., 10" x 7 1/2", wrappers with plastic spine, illustrated, very good. No. 207.....