From the Library of Congress: 'The Sanborn maps are arranged by state, then city and release data. Currently there are over 25,000 sheets from over 3000 city sets online in the following states: AK, AL, AZ, CA, CO, CT, DC, DE, GA, ID, IL, IN, KY, LA, MA, MD, ME, MI, MO, MS, NC, ND, NE, NH, NJ, NV, OH, OK, PA, SD, TX, VA, VT, WY and Canada, Mexico, Cuba sugar warehouses, and U.S. whiskey warehouses'
Wikimapia is a multilingual open-content collaborative map
Latitude and Longitude
The first two links are articles about Latitude and Longitude from Wikipedia. The remaining links are sites where one can find Latitude and Longitude of a location or enter the Latitude and Longitude and get the location on a map.