Phillip W. Mange died June on 18, 2020 at the age of 95. Dr. Mange, who received his Ph.D. in physics from the Pennsylvania State University, was a Senior Scientist at the Naval Research Laboratory (NRL) until his retirement in 1993. Afterwards, he served as a tutor in the Slawsky Clinic for 11 years until returning to his hometown of Kalamazoo, Michigan. 

In 2002-03, he discussed his career—which included work abroad as part of the International Geophysical Year (IGY) of 1957-58 and his ionospheric research for NRL—as part of the AIP Oral History program: https://www.aip.org/history-programs/niels-bohr-library/oral-histories/31144-1