The Society has a collection of social registers, directories and telephone books useful for tracking individuals and businesses within the region.  The collection includes the following:

Philadelphia Red Book

1880, 1886

Philadelphia Blue Book

1884, 1885, 1889, 1891, 1892, 1894-1908, 1911, 1914, 1916, 1918, 1921

Social Register Philadelphia

1900, 1902-1904, 1906-1908, 1918, 1924, 1926, 1928-1931, 1933-1976

Social Register (all areas)

1896, 1977-2007, 2009, 2011-2013, 2017

Summer Social Register

1927, 1931, 1936-1938, 1940, 1943-1953, 1955, 1957, 1959, 1961-1965, 1967-1982, 1984, 1985, 1987-1990, 1992-2001, 2003, 2004, 2006

Yellow Book / Bell Atlantic/Verizon White and Yellow Pages Telephone Books – various volumes dating from 1902 covering Eastern Montgomery County, Lower Bucks and Philadelphia