Research interests are in the development and application of surveying, mapping, and photogrammetric techniques for specialized projects in various parts of the world. This work has involved more than 30 projects in such locations as Greenland, the Canadian Arctic, the North Pole, the Middle East, Central and South America, and Nepal.
Johnson, G. W. (1991). Surveying, mapping and aerial photography, in The Great Isthmus Corridor Route, Explorations of the Phokis-Doris Expedition, E. Kase (ed.). Publ Ancient Studies 3:17-20.
Johnson, G. W. (1990). Aerial photography of the Nazca lines, in The Lines of Nazca, A. Aveni (ed.). Mem Am Philos Soc 183:271-283.