During the colonization of the American West, who did your laundry mostly depended on your marital status. Since laundry was "women's work", bachelors wouldn't do it. But there weren't a lot of women around during the early era of colonization, so you got Chinese immigrants (largely from Hong Kong) who would establish these commercial laundries to cater to all the single men who couldn't or wouldn't do their own laundry (it was also very time-consuming and arduous work). American racism against Chinese immigrants who held these jobs led to things like the avowedly leftist Chinese Hand Laundry Alliance, which was a labor organization that fought to keep these jobs legal.