Sections of railroad crossings in the vicinity of Boston showing the changes of grades as proposed by the Commissioner appointed by the Governor

Chicago citation style
Perkins, Charles. Sections of railroad crossings in the vicinity of Boston showing the changes of grades as proposed by the Commissioner appointed by the Governor. 1850. Retrieved from the Digital Public Library of America, http://archives.lib.state.ma.us/handle/2452/50597. (Accessed June 23, 2018.)
APA citation style
Perkins, Charles, (1850) Sections of railroad crossings in the vicinity of Boston showing the changes of grades as proposed by the Commissioner appointed by the Governor. Retrieved from the Digital Public Library of America, http://archives.lib.state.ma.us/handle/2452/50597
MLA citation style
Perkins, Charles. Retrieved from the Digital Public Library of America <http://archives.lib.state.ma.us/handle/2452/50597>.
Note: These citations are programmatically generated and may be incomplete.