Emeritus Professor Lillian C. McDermott passed away on July 8, 2020.
Lillian was a pioneer in the field of physics education research. A graduate of Vassar College and Columbia University, she joined the University of Washington in 1967 and retired in 2019. She was a fellow of the APS, AAAS, and AAPT, recipient of the AAPT Oersted medal, and the ICPE Medal presented by the International Commission on Education of IUPAP. She was the lead author of Physics by Inquiry and Tutorials in Introductory Physics. Lillian was a passionate advocate for improving physics education through careful study of the conceptual difficulties encountered by students. She is survived by her children Melanie, Constance, and Bruce, as well as four grandchildren. Lillian was a tremendous influence on many former students, postdocs and collaborators, and the entire physics education community. She will be missed.