Two first edition books: The Challenge to Liberty, hardcover with glassine jacket, published by Charles Scribner's Sons in 1934, signed and inscribed on the first free end page in fountain pen, "To A. B. Cargill, with the kind regards of Herbert Hoover"; and American Individualism, hardcover with dust jacket, published by Doubleday, Page & Company in 1922, signed on the first free end page in fountain pen, "Herbert Hoover." In very good to fine condition, with toning, tears, and losses to the jacket of The Challenge to Liberty; and toning to the signed page and dust jacket of American Individualism.