RMS Annual Straight Line Diagrams
| County | No Pipes | With Pipes |
| Adams | ||
| Allegheny | ||
| Armstrong | ||
| Beaver | ||
| Bedford | ||
| Berks | ||
| Blair | ||
| Bradford | ||
| Bucks | ||
| Butler | ||
| Cambria | ||
| Cameron | ||
| Carbon | ||
| Centre | ||
| Chester | ||
| Clarion | ||
| Clearfield | ||
| Clinton | ||
| Columbia | ||
| Crawford | ||
| Cumberland | ||
| Dauphin | ||
| Delaware | ||
| Elk | ||
| Erie | ||
| Fayette | ||
| Forest | ||
| Franklin | ||
| Fulton | ||
| Greene | ||
| Huntingdon | ||
| Indiana | ||
| Jefferson | ||
| Juniata | ||
| Lackawanna | ||
| Lancaster | ||
| Lawrence | ||
| Lebanon | ||
| Lehigh | ||
| Luzerne | ||
| Lycoming | ||
| McKean | ||
| Mercer | ||
| Mifflin | ||
| Monroe | ||
| Montgomery | ||
| Montour | ||
| Northampton | ||
| Northumberland | ||
| Perry | ||
| Philadelphia | ||
| Pike | ||
| Potter | ||
| Schuylkill | ||
| Snyder | ||
| Somerset | ||
| Sullivan | ||
| Susquehanna | ||
| Tioga | ||
| Union | ||
| Venango | ||
| Warren | ||
| Washington | ||
| Wayne | ||
| Westmoreland | ||
| Wyoming | ||
| York |