own home by tunnels. Morgan acquired William E. Dodge's home in April 1903. While the Satterlee house was under construction, the couple moved into the Dodge mansion; afterward, it was razed and replaced with a garden designed by Beatrix Farrand. By December 1904, Morgan had also purchased the old Isaac Newton Stokes house at 229 Madison Avenue for his son J. P. Morgan Jr., who was known as "Jack". When Jack Morgan and his wife Jane finally moved into 229 Madison Avenue in 1905, he commissioned a major renovation of the interior and renumbered it as 231 Madison Avenue. Jack Morgan also performed $1,900 in changes to the house's exterior. J. P. Morgan's holdings on the city block, by 1907, included the whole frontage on Madison Avenue, stretching on 36th Street and on 37th Street. Founding of library Construction Morgan's book collection took up more space than could fit in his residence by 1900. On 36th Street, between his residence and the Satterlee house, Morgan initially hired Warren and Wetmore to design a Baroque-style library. After rejecting Warren and Wetmore's plans, Morgan hired Charles McKim of McKim, Mead & White to design the library in 1902. C. T. Wills was hired as the builder. The library was to be a classical marble structure with a simple design; Morgan had told McKim that "I want a gem". Whitney Warren of Warren and Wetmore had then just completed the elaborately decorated New York Yacht Club Building, and Morgan's preference for an austere structure may have led him to reject Warren and Wetmore. Morgan and McKim planned the library's design for two years and, while McKim was responsible for the overall design, Morgan had final say over the aspects of the plan. An initial proposal for the design entailed building a projecting central mass with two recessed wings on either side, which Morgan deemed to be unwieldy. The second version of the plan reduced the size of the central mass and added a recessed entrance. The final designs called for the front facades of either wing to be flush with the central mass. Morgan was insistent that the library be made of marble, even though he was fine with giving brownstone residences to the rest of his family except for his daughter Louisa. Construction began in April 1903, and the library was being dubbed as "Mr. Morgan's jewel case" by 1904. Morgan acquired