Harold Evans is the author of Aspect Determination in Lunar Shadow on Explorer 35 (1968), Aspect Determination in Lunar Shadow on Explorer 35/ by Harold E. Taylor (1968), Sudden Commencement Associated Discontinuities in the Interplanetary Magnetic Field Observed by IMP-3 (1968), The Latitude-local Time Dependence of Low Energy Cosmic Ray Cut-offs in a Realistic Geomagnetic Field (1967), The Adiabatic Motion of Charged Particles in a Model of the Geoelectric and Geomagentic Fields (1966).