Spanish-American War, April-August 1898. Battle of Manila Bay, May 1, 1898. With Manila, Philippines, in the top center, and the Spanish fleet in the upper right, the U.S. Navy ships listed descending on the left to bottom are: Colliers; USS McCullough; USS Petrel; USS Concord; USS Boston; USS Raleigh; USS Baltimore; and USS Olympia – signaling “Remember the Maine.” Color lithograph by Rand McNally. Courtesy of the Library of Congress. (5/8/2015).