Before revision: Houston, Alan Fraser, "Cadwalader Ringgold, U. S. Navy" an article in California History magazine, Volume 79, Issue 4, Winter 2000, page 208, 2006, Footnote 11 However, Nathaniel Philbrick, in his book "Sea of Glory" about the U.S.
After revision: However, Nathaniel Philbrick, in his book "Sea of Glory" about the U.S.