ANY CHILD KNOWS that the amount of fun in a game is likely to be inversely proportional to its educational value. Parker Brothers didn’t press its luck in the 1899 “Ports and Commerce”: it was nothing more than a conventional card game. Still, it was good for a nascent capitalist to learn where yams are sold and so forth, and the game did give a child the opportunity, by matching the pictures of cities with their chief exports. Can you identify the towns shown here? Answers at far right.