http://www.psrm.org/history/timeline/
http://inventors.about.com/library/inventors/blrailroad.htm
http://tigger.uic.edu/~rjensen/railroad.htm#G
http://memory.loc.gov/ammem/gmdhtml/rrhtml/rrmapRailro01.html
http://quod.lib.umich.edu/cgi/t/text/text-idx?c=railroad;cc=railroad;q1=nyhrrr;rgn=full%20text;page=boolean
http://memory.loc.gov/ammem/gmdhtml/rrhtml/rrintro.html
http://doddcenter.uconn.edu/dodda2z/subjectarea.cfm?Area=16





http://tigger.uic.edu/~rjensen/railroad.htm#G
Atwater, "The Great Railroad Strike"  of 1877 
"Labor Policies of the General Managers' Association of Chicago, 1886-1894," by Donald L. McMurry.
Ely, "The Economic Evils in American Railway Methods" 
Adams, Henry C., "A Decade of Federal Railway Regulation"