Page from a site based on the film Chicago: City of the Century from the PBS series American Experience. (
http://www.pbs.org/wgbh/amex/chicago/peopleevents/p_thomas.html
)
Chapter from Pennsylvania Cavalcade (1942). Offered through Digital Bookshelf at Pennsylvania State University (PDF). (
http://www.libraries.psu.edu/do/digitalbookshelf/27664206/27664206_part_11.pdf
)