This letterbook covers the period February 1908-June 1910. It contains four letters signed by Edison as president of the New Jersey Patent Co. and two letters by Harry F. Miller, secretary and treasurer. One of Edison's letters agrees to pay Jonas Walter Aylsworth $20,000 and Walter H. Miller $10,000 for making a commercially viable eight-minute record. The front cover is marked "1908 1910 N.J. Patent Co." The spine is stamped "Letters" and "3." The book contains 298 numbered pages; it has been used to page 7.

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