Additional Sanborn Map Links (Selected List)

• Sanborn Fire Insurance Maps (Library of Congress Geography & Map Division). Major collection with on-site use only. 
  • Many of the Sanborns in this collection have been digitized. To access, visit Digital Collections > Sanborn Maps.
• University of California at Berkeley, Maps & Air Photos: Sanborn (Fire Insurance) Maps. Mostly California maps.
  • Union List of Sanborn and Other Fire Insurance Maps. Lists cities and towns, and which institution holds copies of materials (by date). Covers all 50 states, listing holdings, by state GOOD PLACE TO START. Selected NE region states:
  • New York; Pennsylvania; Connecticut; Delaware; Massachusetts; New Jersey; Ohio; Rhode Island; Vermont
• Harvard Map Collection of Fire Insurance Maps. (Sanborn and Nirenstein).
• MIT's Sanborn Map Collection (Massachusetts maps) Also has Boston maps.
• Fire Insurance Maps (University of Illinois, Chicago).
• Florida Sanborn Fire Insurance Maps (University of Florida, Map & Imagery Library).
• Checklist of Sanborn Fire Insurance Maps in Branner Library (Stanford University).
• Sanborn® Fire Insurance Maps for Georgia Towns and Cities, 1884-1922 (Digital Library of Georgia). Digitized collection of Sanborn maps in the public domain. Maps are from the University of Georgia Sanborn Map Collection (Maps of Georgia).
• Pennsylvania Sanborn Maps Collection (Penn State Map Library). Covers the state. Print collection almost complete coverage; digital collection is being expanded.
• University of California, Santa Cruz. Santa Cruz County Sanborn maps
• University of Utah Sanborn Maps Collection. Digital collection of Utah cities and towns.
• Cyndi's List of Sanborn Fire Insurance Map Collections. Many states and cities are listed here.

Best place to start: Union List of Sanborn maps.