Unsure how these came into my possession, but I surmise they were in a box of assorted "junk" my parents bought at an auction. I've had these almost since I can remember. Most of mine have to do with lighthouses and explorers. I looked on eBay and although it doesn't show every card in my small collection, I get the idea they are asking anywhere from $5 to $50 (average $15) for these type of cards. Probably depends on condition, theme and demand. Just wondering when these cards were on the market.