The Boy Aviators' Treasure Quest or The Golden Galleon

According to Wikipedia: "John Henry Goldfrap (1879 November 21, 1917) was a North American journalist and author of boys' books, participating in the "American series phenomenon." He always wrote under pseudonyms. Following is a list of his works under the respective pseudonyms. Captain Wilbur Lawton: * The Ocean Wireless Boys series (six volumes, 1914-1917), * The Boy Aviators series (eight volumes, 1910-1915), * The Dreadnought Boys series (six volumes, 1911-1914); Howard Payson * The Boy Scouts series (14 volumes, 1911-1918), * The Motor Cycle Chums series (six volumes, 1912-1915); Marvin West * The Motor Rangers series (six volumes, 1911-1914); Dexter J. Forrester * The Bungalow Boys series (six volumes, 1911-1914); Freemont B. Deering * The Border Boys series (six volumes, 1911-1914)."