Abt (980) US & foreign cvrs related to ships, 1930s-2010s, somewhat grouped by steam & river boats (100+), tall ships, clippers, sailing (100+), yacht & racing (150+), fighting sail, work boats, small sloops & USS Constitution (127); nice selection w/ plenty of cachets, related stamps or pictorial cancellations, FDCs, colorful maxi cards, postcards, show cancels, event souvenirs & more; gen F-VF