Extended Topology and Systems. - Preston C. Hammer (Math. Syst. Theory, 1967)

Undergraduate computer science education. - Preston C. Hammer (SIGCSE, 1970)

Connected Sets: Bases and Metrics. - Preston C. Hammer; Richard M. Jones (Math. Syst. Theory, 1971)

Introduction to the symposium computer science and smaller colleges. - Preston C. Hammer (SIGUCCS Small-College Conference, 1972)

Recommendations on computer science curriculum for undergraduate degree programs. - Richard H. Austing; Bruce H. Barnes; Gerald L. Engel; Gordon E. Stokes; Preston C. Hammer (SIGCSE-SIGCUE, 1976)