time, but began to grow after the American Civil War. Isaac Newton Phelps's daughter Helen married Anson Phelps Stokes in 1865. Their son, architect Isaac Newton Phelps Stokes, was born in the Isaac Newton Phelps house at 231 Madison Avenue two years later. Helen Phelps inherited the house following her father's death. In 1888, she doubled the size of her house and added an attic to plans by architect R. H. Robertson. Morgan estate Hartford, Connecticut-born banker John Pierpont Morgan was looking to buy his own house by 1880. He wished to live in Murray Hill, where many of his and his wife's friends and business contacts lived. Morgan sought to buy John Jay Phelps's house at 219 Madison Avenue, at the corner with 36th Street, which was offered for $225,000. He acquired the house in 1881 and renovated it over the following two years. The exterior was largely retained to harmonize with the other houses, owned by the Phelpses and Dodge, but the interior was extensively renovated by the Herter Brothers. During this time, Morgan began to amass a large collection of fine art, inspired by that of his father Junius Spencer Morgan. The art was stored in his house in England to avoid import taxes. J. P. Morgan also began collecting rare books and other bindings upon his nephew Junius's suggestion; since books were not subject to import taxes, they were stored in the basement of his New York residence. In subsequent years, Morgan became one of the most influential financiers in the United States. J. P. Morgan's collection began to grow quickly after his father died in 1890. While part of Morgan's collection was stored in the basement of his house, other items were loaned or placed in storage. By 1900, the plots north and east of J. P. Morgan's house became available for sale after the death of Melissa Stokes Dodge, who lived in the Dodge mansion just north of Morgan's house. Morgan bought a plot east of his residence in 1900, and, two years later, acquired two adjacent lots with a total frontage of . On the far eastern side of that plot, McKim, Mead & White designed a six-story house at 33 East 36th Street for Morgan's daughter Louisa and her husband Herbert Satterlee. The Satterlees' house was made of limestone, as contrasted with the brownstones on Madison Avenue. It was connected to Morgan's