Call Numbers (Library of Congress classification)
E 11-143 America
E 151-909 United States
E186-199 Colonial history (1607-1775)
E201-298 The Revolution, 1775-1783
E337.8-400 Early nineteenth century, 1801/1809-1845
E456-655 Civil War period, 1861-1865
E660-738 Late nineteenth century, 1865-1900
E740-837.7 Twentieth century
E838-889 Later twentieth century, 1961-2000
E895-904 Twenty-first century
F 1-975 United States local history
F1-15 New England (ME, NH, VT, MA, RI, CT)
F106 Atlantic coast. Middle Atlantic States (NY, NJ, PA, DE, MD, DC)
F206-220 The South. South Atlantic States (VA, WV, NC, SC, GA)
F296-301 Gulf States. (FL, AL, MS, LA, TX)
F396 Old Southwest. (AR, TN, KY, MO)
F476-485 Old Northwest. (OH, IN, IL, MI, WI)
F590.3-596.3 West and Great Plains (MN, IA, ND, SD, NE, KS, OK)
F721-722 Rocky Mountains (MT, ID, WY, CO)
F786-790 New Southwest. (NM, AZ, UT, NV)
F850.5-851.5 Pacific States (CA, OR, WA, AK)
F 1001-1145.2 British America (including Canada) and Dutch America
F 1170 French America
F 1201-3799 Latin America. Spanish America
Access Pennsylvania Digital Repository - HSLC/Access PA manages a statewide digitization service on behalf of the Office of Commonwealth Libraries using the CONTENTdm software product licensed through OCLC.
Digitized collections from Pennsylvania institutions – Collections scanned from Penn State, UPenn, and many other notable PA intuitions.
Encyclopedia of Greater Philadelphia - From abolition and the American Revolution to yellow fever and zoos, the digital Encyclopedia offers a comprehensive, authoritative reference source for the Philadelphia region.
Explore PA History - "Stories from PA History" includes histories built around state historical markers. "Teach PA History" includes elementary, middle, and high school lesson plans for teachers of Pennsylvania and American history. "Visit PA Regions" provides useful information for those who are interested in visiting historic sites.
Heinz History Center in Pittsburgh - From the pre-revolutionary drama of the French & Indian War to the legendary match-ups of the Super Steelers, discover 250 years of Pittsburgh history at the Senator John Heinz History Center.
Pennsylvania Sanborn Maps - Sanborn Fire Insurance maps for the state of Pennsylvania offer historically significant details of a town or city dating from the mid 1800s.
Valley of the Shadow - The Valley of the Shadow is a digital archive of primary sources that document the lives of people in Augusta County, Virginia, and Franklin County, Pennsylvania, during the era of the American Civil War. Here you may explore thousands of original documents that allow you to see what life was like during the Civil War for the men and women of Augusta and Franklin.
PA Digital - digital collections of the Commonwealth’s cultural heritage institutions
PA Photos and Docs - Explore thousands of digitized documents and photographs from unique collections in libraries across Pennsylvania.