Louis Kaplan is channeling his childhood. As a youngster he collected baseball cards, which he stored in boxes and treasured as souvenirs of America’s favorite pastime. Decades later he’s reliving that time while visiting the National Baseball Hall of Fame and Museum in Cooperstown, New York. Opportunities to recapture memories from the past aren’t limited to baseball or New York. From Coca-Cola to cars, movies to museums, chapters of times gone by await discovery. Some may be close to where you live. One exhibit at the Baseball Hall of Fame traces the history of the cardboard collectibles from 1878 to today. Another showcases cards imprinted with the photo and statistics of famous players such as Babe Ruth and Jackie Robinson. A surprising twist is a section devoted to “error cards,” which had misspelled names and other mistakes. Paintings also prompt memories of the past, and few evoke nostalgia more than …