1910, Thomas
A. Edison Incorporated (TAE) was making phonographs, film projectors, electric fans, and storage batteries. Edison was also an early practitioner of "vertical integra- tion": His company controlled each stage of production, from the raw materials to the finished product. To better serve his

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lowed him to impose his old-fashioned tastes on TAE. Because he hated jazz, his company completely missed the great boom in popular music of the 1920s. Edi- son also hired pr...