1. Benton MacKaye: conservationist, planner, and creator of the appalachian trail;Anderson,2002
2. Frederick Law Olmsted: designing the American landscape;Beveridge,1995
3. Silent spring;Carson,1962
4. Revised definition of geodesign;Canfield,2014
5. Charting the unknown: how computer mapping at Harvard became GIS;Chrisman,2006