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| | Prince William Forest Park: An Administrative History (Footnotes) (Site not responding. Last check: 2007-11-03) |
 | | Conrad L. Wirth to Arthur Demaray, 4 April 1935, Record Group 79, Box 124, National Archives, Washington, D. Conrad L. Wirth to Arthur Demaray, 22 April 1935, Record Group 79, Box 124, National Archives, Washington, D. (The Chopawamsic RDA's file number was LPVA6, indicating it was one of the first RDA's built.) |
 | | Conrad Wirth to George A. Moskey, 6 January 1936, Record Group 79, Box 124, National Archives, Washington, D. |
 | | According to Conrad Wirth (Interview, 30 August 1985), the land of present day Springfield, Virginia was also considered for LPVA6 but disqualified for lack of adequate water resources and varied topography. |
| www.nps.gov /prwi/Admin_hstry/adhin.htm (3229 words) |
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