CC0 · no rights reserved
Terrasphere
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
Patent model for Eleazer Root, “Terrasphere,” U.S. Patent 60,642 (Dec. 18, 1866). Eleazer Root (1802-1887), an educator and Episcopalian priest who spent many years in the Midwest, designed two astronomical demonstration instruments. See also Eleazer Root, “Improvement in Terrasphere,” U.S. Patent 69,842 (Oct. 15, 1867).
National Museum of American History’s own descriptionSubjects
Credit lineTerrasphere. National Museum of American History. CC0.
