## [Sanborn Fire Maps](https://www.loc.gov/collections/sanborn-maps/?fa=location_county:las+animas+county%7Clocation:trinidad) Sanborn maps are great resources for determining when a building was built, remodeled, or demolished. Street addresses change over time, and these maps are helpful in identifying street numbers for certain dates. Maps for Trinidad and the surrounding areas are available for various years between 1883 - 1948. [More information about Sanborn Maps](https://www.loc.gov/collections/sanborn-maps/about-this-collection/) including keys, legends, symbols and tips for how to use them.