Alcatraz Island later invalidated the sale and paid Frémont nothing. Frémont and his heirs sued for compensation during protracted but unsuccessful legal battles that extended into the 1890s. Following the acquisition of California by the United States as a result of the Treaty of Guadalupe Hidalgo (1848) which ended the Mexican–American War, and the onset of the California Gold Rush the following year, the U.S. Army began studying the suitability of Alcatraz Island for the positioning of coastal batteries to protect the approaches to San Francisco Bay. In 1853, under the direction of Zealous B. Tower, the United States Army Corps of
Alcatraz Versus the Scrivener's Bones (also very helpful, as he can 'get lost' whenever he is in a dangerous situation, and he 'finds his way back' when he deems it necessary). Each one helps Alcatraz as he wanders the rows of book shelves in the Library of Alexandria. Also revealed is Alcatraz's father and mother's Talent of Losing Things. A third Alcatraz book was released October 1, 2009, titled "Alcatraz Versus the Knights of Crystallia". A fourth book, "Alcatraz Versus the Shattered Lens", published in 2010. Brandon Sanderson has said that he intends to write five Alcatraz books, although Scholastic has thus far only commissioned