Peter Esso walked right by it on the way the bookstore to look at that map of Michigan again in the old atlas he’d found the day before last Wednesday’s Sunday. Or something. He’d had an epiphany the night before. The two St. Joseph Rivers of that state are actually one St. Joseph Rivers, er, River. “Eureka!” he cried while climbing out of the bathtub, still soaking wet as he padded toward the computer and the map of Hillsdale County he left up on it, a *modern* version but still one indicating where the conjoined sources lie: Osseo.
Thus the purchase of the Esso t-shirt from the Marketplace, and also the old sign reinforcing to himself that he was indeed a tiger (see: Wheeler). And then the name change: SoSo to Esso, but the one embedded in the other thanks to Osseo, he understood.
Wait — he has an idea.