Evidence
Primary sources
Everything this history claims should be traceable to something on this page. Where a source is good for one thing and bad for another, the record says so.

plan · ca. 1888[DOC]
Plan of Cushing Island
Maine Memory Network / Maine Historical Society

map · ca. 1888[DOC]
Map of Cushing Island
Maine Memory Network / Maine Historical Society

photograph · ca. 1900[DOC]
Ottawa House, Cushing Island
Maine Memory Network / Maine Historical Society

painting · ca. 1870[DOC]
Cushing Island, Portland Harbor
Maine Memory Network / Maine Historical Society

photograph · ca. 1914[DOC]
District-Wireless Station, Cushing Island, Maine
Maine Memory Network / Maine Historical Society

photograph · Undated[DOC]
Coastal gun and crew, Fort Levett
Maine Memory Network / Maine Historical Society

postcard · ca. 1928[DOC]
White Head, Cushing Island, Portland Harbor, ca. 1928
Boston Public Library
Published & documentary sources
- book · 1886An Historical Sketch, Guide Book, and Prospectus of Cushing's IslandWilliam M. Sargent
- book · 1628A Voyage into New EnglandChristopher Levett
- book · 1674An Account of Two Voyages to New-EnglandJohn Josselyn
- document · 1898–1945Fort Levett construction and armament recordsU.S. Army Coast Artillery Corps
- documentThe Harbor Defenses of Portland (history with reproduced plans)Coast Defense Study Group
- documentNational Archives Fort Topical Index (Fort Levett / 'Fort Levitt, ME')
- photograph · c. 1900Ottawa House, Cushing Island, c. 1900 (glass negative)
- plan · c. 1883Architectural drawing, house on Cushing IslandJohn Calvin Stevens
- documentSAH Archipedia — Cushing IslandSociety of Architectural Historians
- bookPortland in the PastWilliam Goold
- documentMaine Historic Preservation Commission — prehistoric archaeology reports