Digital Commonwealth

MLA

Hoosac Tunnel and surroundings. 1860. Web. 22 Sep 2017. <http://ark.digitalcommonwealth.org/ark:/50959/hd76s066z>.

APA

Hoosac Tunnel and surroundings [Photograph]. (1860). Retrieved from http://ark.digitalcommonwealth.org/ark:/50959/hd76s066z

Chicago

"Hoosac Tunnel and surroundings." Photograph. 1860. Digital Commonwealth, http://ark.digitalcommonwealth.org/ark:/50959/hd76s066z (accessed September 22, 2017).