Public domain
CURTISS AIRPLANE TESTS AND DEMONSTRATIONS; TWIN ENGINE BIPLANE, POTOMAC PARK
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Subjects
Credit lineCURTISS AIRPLANE TESTS AND DEMONSTRATIONS; TWIN ENGINE BIPLANE, POTOMAC PARK. 1916-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.