Esri recently released Volume 3 in its popular Essays on Geography and GIS e-book series. In this collection of essays and articles, thought leaders in the fields of geography and geographic information system (GIS) technology provide insight into the power of spatial thinking. Essays on Geography and GIS, Volume 3, is available for download at no cost. Volumes 1 and 2 are still available and have been downloaded by more than 40,000 people since the series was first launched in September 2008. Visit esri.com/books to explore the complete list of free e-books available from Esri.