If you wanted to confirm the description of the working conditions that the author describes, what other kinds of documents could you research? Whose perspective on working conditions is not mentioned in this article

American express has a long history of working for the good of all in its new york community. in 1885, it engaged its employees to raise money to build the pedestal of the statue of liberty, and today has a program to restore, preserve and revitalize historic sites in new york city. these actions by american express are partial fulfillment of the the firm has established for itself as a corporate citizen.