
R8: Flag Insignia of Governmental Maritime Serivces

R9: Coast Guard Cutters on International Ice Patrol

R10: Derelicts Drifting Obstructions

R11: Light Ships Signals of Distress/Overfalls Lightship

R12: International Signal Code

L3: Exports: Port of Philadelphia

L5: Government Aids to Harbor Navigation

L6: Government Aid to Deep Sea Navigation - Captain Taking Observation

L7: Foreign Imports to Philadelphia

United States Custom House