David Rumsey
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Duluth Municipal Airport : Duluth, Minnesota. Preliminary master plan
13219.009
missinglocation
Duluth Municipal Airport : Duluth, Minnesota : Preliminary master plan. Master planning directive: Williamson-Johnson. 17 Sept. 1951. (to accompany) USAF Installations : Master plans : Zone of interior. Volume number 329. Date of issue, printed April 1953.
1951
1953
United States. Air Force
53 × 37 cm
1 : 12000