Cheape, Charles W. Moving the Masses. Harvard University Press. Cambridge, Massachusetts: 1980.

Clarke, Bradley R. and O.R. Cummings. Tremont Street Subway. Boston Street Railway Association, Inc. Boston, Massachusetts: 1997.

Fischler, Stanley I. Moving Millions. Harper & Row Publishers. New York: 1979.
 
 

Trager, James. The Peoples Chronology. New York. Henry Holt and Company: 1992.
 
 

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