Paul Paul Bolstad Professor Emeritus in Forestry Resources at the University of Minnesota, with over 35 years of teaching, researching, and applying GIS. Much of his research and teaching focused on water and carbon cycling from leaf to regional scales, mostly in forest ecosystems. Another major focus is the development and application of remote sensing and spatial analysis to quantify vegetation structure and human landscape disturbances. He has over 250 publications and presentations, work that has been cited more than 15,000 times. He has directly taught more than 5,000 students in his university-level GIS courses. 

Steve joined Paul in writing the Seventh Edition. He is a Professor of Geography at the University of Minnesota and has studied human-environment dynamics with GIS for over two decades. He helps lead several big projects, including the National Historical Geographic Information System (NHGIS) and International Historical Geographic Information System (IHGIS). He is also a Fellow of the UMN Institute of Environment and a Scholar of the College. He has over 100 publications and presentations, work that has been cited over 10,000 times, and has taught thousands of students in his GIS courses.