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Originally Posted by nyapbp
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If you want to verify the location of old houses or other buildings, take a look at the Sanborn maps (AKA Sanborn Atlases) from various years. These maps are generally available in city historical museums and/or university libraries. The maps were updated periodically to reflect additions and/or changes in building structure and/or function. The Sanborn maps can be viewed in hard copy or in a digital version, depending upon what is available.