This letterbook covers the period August-September 1878. It consists of letters by James Redpath, manager of the company's exhibition agencies, addressed to exhibitors and prospective exhibitors throughout the United States and Canada. The correspondence pertains to the assignment of phonograph exhibitors and improvements in various phonograph models. The front cover is stamped "Phonograph Agency" and is marked "5." The book contains approximately 250 pages and an index. Approximately 10 percent of the letters have been selected.