Pennsylvania - Significance region: Local
| 109-115 Wood Street |
| 1616 Building |
| 1900 Rittenhouse Square Apartments |
| 26th District Police and Patrol Station |
| Aaronsburg Historic District |
| Abbeville |
| Abbott, John, House |
| Academy Hall |
| Academy Hill Historic District |
| Academy Hill Historic District |
| Adams, C.F., Building |
| Adams County Courthouse |
| Adamson, William, School |
| Adelphi School |
| Ad-Lin Building |
| Ajax Metal Company Plant |
| Albertson, Henry, Subdivision Historic District |
| Albion Carpet Mill |
| Albright Memorial Building |
| Alcorn, James, School |
| Alden Villa |
| Alleghany Mennonite Meetinghouse |
| Allegheny Baptist Church |
| Allegheny Commons |
| Allegheny High School |
| Allegheny Second Ward Industrial Historic District |
| Allen, Ethan, School |
| Allentown Masonic Temple |
| Allentown National Bank |
| Allerdice, Taylor, High School |
| Allerman, Conrad and Margaret, House |
| Allgates |
| Allison, William, House |
| Alpha Terrace Historic District |
| Amalgamated Center |
| Ambridge Commercial Historic District |
| American/Consolidated Tobacco Companies |
| American Railway Express Company Garage |
| Americus Hotel |
| Andrews Bridge Historic District |
| Andrews, H. O., Feed Mill |
| Angle Farm |
| Anoatok |
| Anthracite Bank Building |
| Archeological Site 36 LY 37 |
| Armstrong County Courthouse and Jail |
| Armstrong Tunnel |
| Arndt, Jacob, House and Barn |
| Arsenal Junior High School |
| Ashbridge, David, Log House |
| Ashley and Bailey Company Silk Mill |
| Ashley and Bailey Silk Mill |
| Ashton-Hursh House |
| Athens Historic District |
| Atkinson Road Bridge |
| Audenried, Charles Y., Junior High School |
| August, Wendell, Forge |
| Autun |
| Axe, William W., School |
| Ayres, Bucher, Farm |
| Ayres, John, House |
| Bache, Alexander Dallas, School |
| Bachman and Forry Tobacco Warehouse |
| Bahr Mill Complex |
| Bailey Covered Bridge |
| Bailey, John, Farm |
| Baily Farm |
| Baird, Matthew, Mansion |
| Baker Bridge |
| Baker Mansion |
| Baldwin-Reynolds House |
| Bangor Episcopal Church |
| Bangor Historic District |
| Baptist Institute for Christian Workers |
| Barclay House |
| Barclay House |
| Barley Sheaf Inn |
| Barnard, William J., Residence |
| Barree Forge and Furnace |
| Barrett, Rufus, Stone House |
| Barronvale Bridge |
| Bartlett School |
| Barton, Clara, School |
| Bartram, John, High School |
| Basch & Fisher Tobacco Warehouse |
| Bath Crossroads Historic District |
| Bauern Freund Print Shop |
| Bausman Farmstead |
| Baxter High School |
| Bayard School |
| Beallsville Historic District |
| Bear Creek Village Historic District |
| Beatty's Mills Factory Building |
| Beaver, Thomas, Free Library and Danville YMCA |
| Bechdel II, Christian, House |
| Beck House |
| Beck, William Henry and Clara Singer, Farm |
| Bedford County Alms House |
| Bedford School |
| Beeber, Dimner, Junior High School |
Data from United States Park Service and Wikidata
