Robin, LC started scanning them about 25 years ago with the aim of putting them all online (full color)-but that has taken a long time. ProQuest saw a market for selling the images. ProQuest made their scans from microforms -so I believe that they are only black & white. As you can see, color is important with Sanborn Maps. Best wishes, Scott R. McEathron, M.A., M.L.I.S. Librarian Head, Center for Graduate Initiatives & Engagement KU Libraries From: Maps-L: Map Librarians, etc. <[log in to unmask]> On Behalf Of Robin Rank Sent: Tuesday, February 20, 2024 12:55 PM To: [log in to unmask] Subject: Question about Sanborn Maps Dear List Members, Can anyone tell me about differences between ProQuest's database "Digital Sanborn Maps, 1867-1970" and the Library of Congress Sanborn Maps Collection online? https://www.loc.gov/collections/sanborn-maps/about-this-collection/ Thank you so much! Robin Rank ****************************** Robin Rank Reference and Instruction Librarian Kalamazoo College Library pronouns: she/her/hers email: [log in to unmask]<mailto:[log in to unmask]> Teams Chat<https:[log in to unmask]> with Robin Visit our Library website<https://library.kzoo.edu/> Make an appointment<https:[log in to unmask]> for research help from Anywhere!