Subject is exactly factory girls
Cornelia Stratton Parker engaged with low-wage earning women in six different jobs so she could "see the world through their eyes" and for the time being, close her own. Her six-part series appeared in Harper's Magazine between June and December of 1921 and as a book, published by Harper Brothers, the following year.
The sisters-in-law van Vorst made the circuit as ostensible factory girls from the pickle factories of Pittsburgh to the shoe factories of Lynn, Massachuetts and on to the cotton mills of North Carolina. Originally published in a series in Everybody's Magazine in 1902, it became a book, published by Doubleday, the following year. Their starting point was an unapologetic sense of superiority over the wage earners they spent months impersonating, living and working among. Reviewers were quick to point to this approach as both a plus and a minus. As for revelations, they reported on the surprising number of young women whose only reason for working in the factories was near folly -- to earn pocket money for clothes and leisure -- and how that had depressed wages and opportunity for women who needed the jobs to support themselves or their families.
Reporters going undercover as factory workers in order to expose awful working conditions from 1888 to present.