The Library of Congress has made the Sanborn Maps Collection available online.
The Sanborn Fire Insurance Company mapped cities and towns in several states, including Arizona. These historical map sets for Tucson were published in 1886, 1889, and 1896.
Find maps of Tucson here.
Read About this Collection for information about Sanborn keys, colors, legends and more about reading and understanding the maps.
Find the information you need by calling the library's Infoline at 520-791-4010 or by sending your question to Askalibrarian.