12 February 1848, The Italian Question, The concession of the King, who, be it also remembered, is a Bourbon, under such circumstances, is one of a suspicious character. Those who remember how faithlessly his father behaved in 1821, under precisely similar circumstances, to his subjects, cannot help entertaining the apprehensions that the son, like the sire, is playing fast and loose with his people, and that he will turn on them when the Austrians come to his relief. We do not think, however, that the double-eagle will strike his accursed talons into the heart of Italian liberty this time.
10 January 1849, Thirtieth Congress. Second Session. Abstract of Proceedings., On motion of Mr. Douglass, the Committee on Finance were instructed to inquire into the expediency of directing the coinage at the mint and branch mints of gold dollars and the double-eagle.
NYT|date=18 November 1934|title=Washington Cent of 1792 Brings $101|archiveurl=https://web.archive.org/web/20250622151553/https://www.nytimes.com/1934/11/18/archives/washington-cent-of-1792-brings-101-highest-price-of-auction-is-202.html|passage=The New Orleans minted double-eagles of 1857 and 1858 brought $34 each.
13 August 2023, U.S. currency denominations smaller than they used to be, Gold coins were in U.S. circulation through 1933, when the gold standard was abolished. Many were based on the $10 “eagle,” with corresponding quarter-eagles of $2.50, half-eagles of $5, and double-eagles of $20, along with 1-dollar gold pieces.
