Genealogists have always been taught to record our sources of information. We not only record the name of the book or other source of genealogy information, but we also record the location of the building (repository) where we found it. Typically we record the building’s name, street address, city and state.
With today’s technology, shouldn’t we also be recording the geographic coordinates? With GPS receivers and the plethora of high-quality on-line maps, it is now easy to find the exact latitude and longitude of any address. Unlike street names, the longitude and latitude will never change.