Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More
Thirtieth Street Station, Power Director Center, Thirtieth & Market St...
Significance: It was designed to visually and aurally indicate the operating status of the railroad's power system. This particular power director center monitored and supervised operation of all switches in th... More