He told this story early in his career, and included it as part of Maus. One of the illustrations shows young Spiegelman emerging from a subway platform in striped pajamas (evoking both a mental hospital and a concentration camp at the same time) as he begins the tragic walk home. Since I know he lived in my neighborhood, it's easy for me to recognize his subway station, the 63rd Drive stop on the G, R and V line. This is what it looked like several decades ago, according to Maus: