Real property 307 History 77 Maps 69 Sources 36 Landowners 19 Land grants 12 Land titles 11 more ... Protocol-books 10 Real Property--Pennsylvania--18th century 9 Description and travel 8 Directories 8 Real estate business 6 Real property tax 6 Election districts 5 Genealogy 5 Housing 5 Real Property--Pennsylvania--Philadelphia 5 Real Property--Philadelphia, Pa.--19th century 5 Agriculture 4 Atlas 4 Auctions 4 Farms 4 Land tenure 4 Real property, Exchange of 4 Real property--Pennsylvania 4 Valuation 4 Agricultural resources 3 Biens réels 3 Public lands 3 Real Property--Pennsylvania--19th century 3 Real property--Philadelphia, Pa.--18th century 3 Claims 2 County government 2 Dwellings 2 Estate administration--19th century 2 Estates (Law) 2 Inheritance and succession 2 Land records 2 Land speculation--Philadelphia (Pa.)--19th century 2 Land value taxation 2 less ...