Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Philadelphia County (Pa.) 9 Philadelphia County (Pa.) -- Biography. 2 Philadelphia County (Pa.) -- Buildings, structures, etc. 1 Philadelphia County (Pa.) -- Census, 1790. 1 Philadelphia County (Pa.) -- Census, 1900. 1 Philadelphia County (Pa.) -- CENSUS 1910. 1 Philadelphia County (Pa.) -- Church history. 2 Philadelphia County (Pa.) -- Genealogy. 75 Philadelphia County (Pa.) -- Genealogy -- Sources. 1 Philadelphia County (Pa.) -- History. 5 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >