In the early decades of the twentieth century, Iowans all across the Hawkeye State succumbed to the nationwide craze for exchanging photographic postcards, mailing each other thousands of images--serious and whimsical--of Uncle Bob and Baby Dora, the Sunday school outing, train wrecks, the Fourth of July celebration, the merchants' carnival, the record-setting blizzard following the bin-busting harvest, the new courthouse, Ackley's Sauer-Kraut...