Dr. David Halliday (late) was associated with the University of Pittsburgh as Professor Emeritus. As department chair in 1960, he and Dr. Robert Resnick collaborated on Physics for Students of Science and Engineering and then on Fundamentals of Physics. The Fundamentals is currently in its 10th edition and has since been handed over from Halliday and Resnick to Jearl Walker. Dr. Halliday passed away in April 2, 2010.