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APA Citation

., & John Simon Guggenheim Memorial Foundation (Receiver). I had a detailed exchange of letters with Mr. Hapgood: . Princeton, NJ (USA).

MLA Citation

, and John Simon Guggenheim Memorial Foundation (Receiver). I Had a Detailed Exchange of Letters With Mr. Hapgood: . Princeton, NJ (USA),

Warning: These citations may not always be 100% accurate.

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