Wistar family developed it into a self-sufficient farm until it became a Gentlemen's Farm owned by two farmers, Lorimer and Butler. Friends of Fox Chase Farm, an all-volunteer group, currently assists in maintaining and preserving this pastoral treasure for present and future generations. William Rhawn, president of the National Bank of the Republic in 1879, built a summer residence here. To design the project, he chose architect Frank Furness, whose work was synonymous with the mansions and public buildings of the Gilded Age. The banker's country estate includes a carriage house and gatekeeper's house. He called the estate “Knowlton” because it resembled the estate in England of Rhawn's wife's great-grandfather, John Knowles. It has since been converted into a catering establishment. Ryerss Mansion is also located in Fox Chase. The house was built by merchant Joseph Waln Ryerss in 1859 and dramatically overlooks Burholme Park, one of the highest vistas in Philadelphia. The mansion is home to a massive and eccentric collection of artifacts and antiquities from around the world, collected during the Ryerss family's extensive travels and exotic sojourns, from Europe, to Africa, to the Far East. Among the historic properties located in this neighborhood are: Knowlton Mansion, designed by Frank Furness; on the National Register of Historic Places Ryerss Mansion, home of Joseph Waln Ryerss; on the National Register of Historic Places The Verree House, site of a raid by British troops during the American Revolutionary War Demographics The median age is 36.6 years for males and 39.0 years for females. Married couples made up 40.3 percent of the neighborhood's population. The neighborhood was 80.37 Caucasian, 8.63 percent African American, 4.75 percent Asian, 2.58 percent mixed race, .07 percent Native Hawaiian and 3.6 percent other race. The median household income for Fox Chase was $54,870 in 2011, compared with $34,207 for Philadelphia as a whole. The population below the poverty level in Fox Chase was 10 percent, compared with 28.4 percent for Philadelphia. Business The largest employer of Fox Chase is the internationally known Fox Chase Cancer Center, a unique facility that merges cancer research with the treatment of cancer. Its researchers have won Nobel Prizes for their contributions. Transportation Public transportation is provided by several SEPTA bus routes and the Fox Chase Line regional rail service which terminates near Rhawn Street and Oxford Avenue. Education Public libraries The Fox Chase Branch of the Philadelphia Free Library is