Very few genealogical researchers are aware of cadastral mapping. The term "cadastre" is defined as follows: an official register of the quantity, value, and ownership of real estate used in apportioning taxes. Since taxation is historically a common issue, therefore these maps exist and can be used by genealogists to locate ancestral lands and identify the boundaries. This class will focus on the cadastral survey, historical cadastral mapping and modern use of these maps today. We will look at websites and how to use them with family history research projects.