1
Record Source: Archival Materials
Subjects and Genres: '; ...Pennsylvania Public Utility Commission NACO Authority File...
Link to finding aid
Manuscript
2
Record Source: Archival Materials
Subjects and Genres: '; ...Built environment--Pennsylvania--Philadelphia--20th century. Local sources...
Manuscript
3
Record Source: Archival Materials
Subjects and Genres: '; ...Street railroads--Pennsylvania. Local sources...
Manuscript