Federal Reserve Bank of Philadelphia. Community Development Studies & Education Department
and Federal Reserve Bank of Philadelphia. "Affordability and Availability of Rental Housing in the Third Federal Reserve District : Map : 2012,"
Cascade Focus (Federal Reserve Bank of Philadelphia)
(December 2012).
https://fraser.stlouisfed.org/title/6890/item/628546/content/pdf/frbphil_cascadeFocus_201212_map, accessed on June 16, 2026.