Maps capture information about land, culture, politics, and people that often cannot be found in other sources. Once printed, the information gains a historical significance, as it records geographical information of a specific place at a specific time. Historical maps provide essential information for scholars studying political, physical, and land use changes over time. Much of the information learned about the past will also influence studies, findings, and changes for the future. Analyzing change requires accurate comparisons of maps, a challenge when working with the static confines of print. More and more researchers are turning to geographical information system (GIS) technology to digitize maps for computational analysis, georeferencing tools, 3-D modeling, and to combine the maps with other spatial data sources. Historical mapping within a GIS has been used to explain past and present phenomena, to predict changes as well as to make changes to our landscape. Scholars have studied historical maps and documents with the aid of GIS technology, gaining information on tree invasion (Mast, Veblen, and Hodgson 1997), property identification (Leppin et al. 2000), agricultural land use (Domaas 2007), railroad networks (Siebert 2004), accuracy of historical maps (Pearson 2005), and much more. Using historical maps within a GIS to trace land use practices can be an effective and efficient method of analyzing and visualizing historical land use patterns. Historical GIS, although not a new field, is certainly becoming very popular and attracting individuals who are not geography, history, or GIS professionals. With access to historical maps and GIS software on the Internet, historical mapping is intriguing both the young and old and, with such ease of access, is interesting them in their local and world history. Whether their interest is in military mapping, historical demographics, distribution of diseases, or genealogy, the tools are available for them to access.