APA (7th ed.) Citation

Gray, O. W. (1873). Gray's atlas map of Chicago. [Stedman, Brown & Lyon?].

Chicago Style (17th ed.) Citation

Gray, O. W. Gray's Atlas Map of Chicago. [Philadelphia]: [Stedman, Brown & Lyon?], 1873.

MLA (8th ed.) Citation

Gray, O. W. Gray's Atlas Map of Chicago. [Stedman, Brown & Lyon?], 1873.

Warning: These citations may not always be 100% accurate.