Gray's Map of Illinois. (inset) Plan of Cook County & Vicinity of Chicago.

MLA

Gray, Ormando Willis. Gray’s Map of Illinois. (Inset) Plan of Cook County & Vicinity of Chicago. Jan. 1874. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsluc&AN=edsluc.RUMSEY.8.1.206990.3003089&authtype=sso&custid=ns315887.

APA

Gray, O. W. (1874). Gray’s Map of Illinois. (inset) Plan of Cook County & Vicinity of Chicago.

Chicago

Gray, Ormando Willis. 1874. “Gray’s Map of Illinois. (Inset) Plan of Cook County & Vicinity of Chicago,” January. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsluc&AN=edsluc.RUMSEY.8.1.206990.3003089&authtype=sso&custid=ns315887.