This letterbook covers the period December 1910-March 1911. Most of the correspondence is by Edison, Harry F. Miller, and George A. Meister. Many of the letters pertain to the manufacture of Edison's improved alkaline storage battery and its use in automobiles, trucks, railway vehicles, and submarines. There is also correspondence regarding difficulties in production of the storage battery by Sigmund Bergmann in Berlin, Germany; an audit of the Edison Storage Battery Co.; Edison's offer to sell the Lansden Co.; and improvements in his phonograph. Other letters describe ongoing progress in the development of molds and patterns for use in the construction of concrete houses, including a letter in which Edison expresses his desire to provide the working man a home "on the easiest kind of terms." Among the items relating to personal and family matters is correspondence regarding Edison's attitudes on religion, immortality, and agnosticism; his opinion on the "greatest inventive problems facing the world"; his remedy for his digestive problems; his membership in clubs and societies; and his charitable donations, including a contribution to the Library Board of Milan, Ohio.

The label on the front cover contains the following notation: "T.A.E. Letters  Indexed 1910-11 - From Dec 18-1910 To March 6 1911." There is a label on the spine with similar information. The book contains 700 numbered pages and an index. Approximately 15 percent of the book has been selected.