At the time of the photo Duluth's population was still climbing. Duluth gained 20,000 people between 1910 and 1920. It was the fourth decade in a row the city's population rose at a level that could be measured in the tens of thousands, but it was also the last. 

In the past century there was a slow population climb, then a somewhat rapid decline and a  long period of leveling off -- so right now we sit at roughly the same 86,000 that were here when the photo was shot.

Obviously the population drop that happened from the 1960s to the 1990s -- along with the struggles of a cold, snowless winter -- leaves a lot of Duluthians inclined to get a laugh out of the notion of a woman "leaving Duluth" and perhaps saying "good riddance." 

When I look at her, I see she is reluctant to leave. She had a good time on her visit to Duluth. Perhaps there was some romance. Maybe she'll come back some day. But for now she'll just send this postcard home so her friends and family don't worry.

In the interest of comedic pessimism, however, I'll suggest she lived here for 20 years and finally decided she was unhappy with the quality of burritos and needed to head south.