John D. Bossler is Director of the Center for Mapping at The Ohio State University. He is also Professor of Geodetic Science and Surveying in the University, s Department of Civil and Environmental Engineering and Geodetic Science. As the former Director of the Coast and Geodetic Survey, Dr. Bossler received the Department of Commerce Gold Medal for his management of the redefinition of the North American Datum (NAD83) project. He is a Past President of the American Congress on Surveying and Mapping and is a Fellow and Past President of the Geodesy Section of the American Geophysical Union. A