| Palmer, Herriott C. The First Presbyterian Church of Franklin, Indiana : one hundred and twenty years, 1824-1944. Franklin, Ind. : First Presbyterian Church of Franklin, Ind., 1946 | Complete |
| Peattie, Elia Wilkinson. History of Gibson County, Indiana. Hartford, Ky.: Cook & McDowell Publications, 1979 | Complete |
| Pennsylvania (state) | References Only |
| Pennsylvania (state) -- Adams (county) | References Only |
| Pennsylvania (state) -- Allegheny (county) | References Only |
| Pennsylvania (state) -- Armstrong (county) | References Only |
| Pennsylvania (state) -- Beaver (county) | References Only |
| Pennsylvania (state) -- Bedford (county) | References Only |
| Pennsylvania (state) -- Berks (county) | References Only |
| Pennsylvania (state) -- Bucks (county) | References Only |
| Pennsylvania (state) -- Butler (county) | References Only |
| Pennsylvania (state) -- Centre (county) | References Only |
| Pennsylvania (state) -- Chester (county) | References Only |
| Pennsylvania (state) -- Crawford (county) | References Only |
| Pennsylvania (state) -- Cumberland (county) | References Only |
| Pennsylvania (state) -- Dauphin (county) | References Only |
| Pennsylvania (state) -- Delaware (county) | References Only |
| Pennsylvania (state) -- Erie (county) | References Only |
| Pennsylvania (state) -- Fayette (county) | References Only |
| Pennsylvania (state) -- Franklin (county) | References Only |
| Pennsylvania (state) -- Greene (county) | References Only |
| Pennsylvania (state) -- Huntingdon (county) | References Only |
| Pennsylvania (state) -- Lancaster (county) | References Only |
| Pennsylvania (state) -- Luzerne (county) | References Only |
| Pennsylvania (state) -- Lycoming (county) | References Only |
| Pennsylvania (state) -- Mercer (county) | References Only |
| Pennsylvania (state) -- Mifflin (county) | References Only |
| Pennsylvania (state) -- Montgomery (county) | References Only |
| Pennsylvania (state) -- Northampton (county) | References Only |
| Pennsylvania (state) -- Northumberland (county) | References Only |
| Pennsylvania (state) -- Philadelphia (county) -- Philadelphia (city) | References Only |
| Pennsylvania (state) -- Somerset (county) | References Only |
| Pennsylvania (state) -- Venango (county) | References Only |
| Pennsylvania (state) -- Warren (county) | References Only |
| Pennsylvania (state) -- Washington (county) | References Only |
| Pennsylvania (state) -- Wayne (county) | References Only |
| Pennsylvania (state) -- Westmoreland (county) | References Only |
| Pennsylvania (state) -- York (county) | References Only |
| Perrin, William Henry. History of Bond and Montgomery Counties, Illinois. Chicago: O. L. Baskin, 1882 | Complete |
| Perrin, William Henry. History of Crawford and Clark counties, Illinois. Chicago : O.L. Baskin & Co., 1883 | Complete |
| Philbrick, Francis S. The Laws of the Indiana Territory, 1801-1809. Springfield: Illinois State Historical Library, 1930 | Complete |
| Plan for the Temporary Government of the Western Territory | Complete |
| Portrait and biographical record of Madison County, Illinois. Chicago, Biographical Pub. Co., 1894 | Complete |
| Portrait and biographical record of Montgomery and Bond counties, Illinois. Chicago: Chapman bros., 1892 | Complete |
| Portrait and biographical record of Randolph, Jackson, Perry and Monroe counties, Illinois. Containing biographical sketches of prominent and representative citizens ... the presidents of the United States, and the governors of the state of Illinois. | Complete |
| Portrait and biographical record of Randolph, Jackson, Perry and Monroe counties, Illinois...Chicago : Biographical Pub. Co., 1894 | Complete |
| Power, J. C. Directory and Soldiers' Register of Wayne County, Indiana. Richmond, Ind.,: W.H. Lanthurn & Co., 1865 | Complete |
| Proceedings of the celebration of the establishment of Whitewater Monthly Meeting of the Religious Society of Friends, Richmond, Wayne County, Indiana, Ninth month 30 to Tenth month 2, 1909. [Richmond, G.O. Ballinger Co., ptrs., 1909?] | Complete |
| Proclamation altering boundary line between Randolph and St. Clair counties, 1803 | Complete |
| Proclamation Altering Boundary Lines of Knox, Randolph, and St. Clair Counties, 1801 | Complete |
| Proclamation Creating Adams County, 1797 | Complete |
| Proclamation Creating Jefferson County, 1797 | Complete |
| Proclamation dividing Illinois Territory into two counties, 1809 | Complete |
| Proclamation erecting new county of Dearborne, 1803 | Complete |
| Proclamation erecting new county of Wayne, 1803 | Complete |
| Proclamation establishing Gallatin, Johnson, and Madison counties, 1812 | Complete |
| Provisional Articles Signed at Paris, 1782 | Complete |
