Charles Oliver Brown
Brown's book Talks on the Labor Troubles is often mentioned  as one of the early clerical statements on American labor troubles.
- Michigan history: Sherman gives his 'war is hell' speech
- Church History: Studies in Christianity and Culture, Cambridge University
- Marty, Martin E. (1997). Modern American Religion, Volume 1: The Irony of It All, 1893-1919. Chicago: University of Chicago Press. ISBN 978-0226508948.
- Gould, Rebecca (2005). At home in nature modern homesteading and spiritual practice in America. Berkeley: University of California Press. ISBN 978-0520241428.
- Brown, Oliver (1886). Talks on the Labor Troubles, 9.