Title: Martin Mars XPB2M-1R & JRM Flying Boats
Subjects: Martin JRM Mars, Cutaway (JRM Mars/XPB2M-1R), Cockpit (JRM Mars), Skalategninger (JRM Mars), Skalategninger (XPB2M-1R Mars), Martin XPB2M-1R Mars, Naval Aircraft, Eksperimentalfly, Naval Aviation, Amfibiefly, Old Lady