Bibliography
Historic American Buildings Survey, via Library of Congress website. See all of the HABSurveys of buildings in Philadelphia here.
"Lemon Hill Mansion":http://lemonhill.org/
Levins, Hoag. “You’re Paying Rent for the Favored 44.” Philadelphia Daily News. January 24, 1977. (And subsequent articles)
Moss, Roger W., and Tom Crane. Historic Houses of Philadelphia: A Tour of the Region’s Museum Homes. Philadelphia: University of Pennsylvania Press, 1998.
"Rentals,"Cancer Support Community Greater Philadelphia: http://cancersupportphiladelphia.org/rentals/
"Rockland Mansion and Fairmount Park" Psychoanalytic Center of Philadelphia: http://pcop.pfitinc.com/about-pcop/rockland-mansion-and-fairmount-park/
Sloop, Jessica A., "Chamounix Mansion Historic Structure Report," paper, Historic Preservation Program, University of Pennsylvania, 1994.