Papers, 1868–1931, ca. 505,000 items. Inventor. Incoming correspondence files include ca. 16 letters relating to Edison's inventions and Russia. For example, there are letters from Russian officials or engineers to the Edison Electric Light Co. (New York), inquiring about establishing lighting systems and the costs of certain manufactured items, 1 letter each in 1883, 1885, 1888, and 1890. 10 letters in 1890 and 1 in 1894 are from Julius H. Block, a Moscow importer of machinery and hardware, telling of phonograph demonstrations he had given and recommending ways to market phonographs. Edison replied in 1 note to Block, 1894. Researchers should contact the site archivist at least 1 week in advance, detailing research topics and files they wish to see (in this case, "Electric Light Foreign Russia, 1883–1890" and "Phonograph Foreign Russia, 1890–1894"). (NUCMC 66–797)
