John Todd Mulder was a quiet man who was a devoted father, brother and friend. He is survived by his son, Zachary Mulder, and his sisters, Margaret Welch and Jean Mulder, and her husband, Cameron Ford. Todd holds a Bachelors of Engineering from the University of Southern California and has worked for Honeywell since 1973, first in Los Angeles and then from 1986 in Tucson. He was a long term member of St. Andrew's Presbyterian, where he was a pivotal member of the audio/visual team. Along with these interests, he was a keen photographer, reader and traveler.