Consisting of correspondence and related papers, includes letters to and from Pratt, notes, articles and other printed materials, and photographs. The papers include correspondence relating to his researches into the history of wireless and early radio, his early work in radio, and his activities while chairman of the History Committee of the Institute of Radio Engineers and its successor, the Institute of Electrical and Electronics Engineers. Included also is material which he gathered relating to the history of radio, including articles, patents, and materials from various companies, including reports, advertisements for equipment, telegraph blanks and photographs of installations.

Haraden Pratt was born in San Francisco, California on July 18, 1891. His mother and father, who had both been telegraph operators, taught him telegraphy at age six. By 1905 he had constructed his first amateur wireless receiving station, in the attic of his parents' house.

Number of containers: 4 boxes Linear ft.: 2

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Collection is open for research.