SEPTEMBER 1, 1961.
1946 THE PENNSYLVANIA RAILROAD PRR SAFETY RULES BOOK EMPLOYEE
1933 THE PENNSYLVANIA RAILROAD PRR SAFETY RULES BOOK EMPLOYEE
1925 THE PENNSYLVANIA RAILROAD PRR BOOK OF RULES FOR CONDUCTING TRANSPORTATION
1956 THE PENNSYLVANIA RAILROAD PRR BOOK OF RULES FOR CONDUCTING TRANSPORTATION
1941 THE PENNSYLVANIA RAILROAD PRR BOOK OF RULES OPERATING SIGNAL & INTERLOCKING