This street map of Detroit was created by city surveyor, Eugene Robinson and published by the Silas Farmer Company (31 Monroe Ave, corner of Farmer St.)
An additional ink stamp on the map reads:
“Waterman’s Real Estate Exchange. First-class Private Residences, Vacant Lots on the Best Streets. Business Property for sale by WM. J. WATERMAN, opposite the Post Office.”
Maps have been such an impactful tool for real estate and land developers for over a century.