United States v. Gettysburg Electric Ry. Co. was a case to prevent trolley operations on the Gettysburg Battlefield. The dispute began in August 1891 when the Gettysburg Battlefield Memorial Association's board approved attorney Samuel Swope's motion to deny trolley right-of-way along GBMA roads. Despite the 1896 US Supreme Court ruling that the railway could be seized for historic preservation, as well as earlier legislative efforts to appropriate federal acquisition funds, create a War Department commission, and form the Gettysburg National Military Park; the trolley continued operations until obsolete in 1916.