[Buy Image] [Memo and diagram describing Triangulation Station Hiarc, "on the lawn of the Atlantic Refining Co. office building above Hog Island," attached to plan RC-J-Delaware1940_3], 1946 - Plan

Plan, [Memo and diagram describing Triangulation Station Hiarc, "on the lawn of the Atlantic Refining Co. office building above Hog Island," attached to plan RC-J-Delaware1940_3]

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PHILADELPHIA STREETS DEPARTMENT, SURVEY AND DESIGNS BUREAU

Frank Morelli
Survey Bureau Manager
Philadelphia Streets Dept.

Phone: (215) 686-5540
Email: frank.morelli@phila.gov

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Plan, [Memo and diagram describing Triangulation Station Hiarc, "on the lawn of the Atlantic Refining Co. office building above Hog Island," attached to plan RC-J-Delaware1940_3]