Model Engineer - Vol. 134 - Issue: 3351 / 16th - 31st August 1968

Model Engineer - Vol. 140 - Issue: 3488 / 3rd - 16th May 1974

Model Engineer - Vol. 141 - Issue: 3504 / 3rd - 16th January 1975

Model Engineer - Vol. 142 - Issue: 3544 / 3rd - 16th September 1976

Model Engineer - Vol. 141 - Issue: 3522 / 3rd - 16th October 1975

Model Engineer - Vol. 142 - Issue: 3550 / 3rd - 16th December 1976

Model Engineer - Vol. 135 - Issue: 3378 / 3rd - 16th October 1969

Model Engineer - Vol. 143 - Issue: 3562 / 3rd - 16th June 1977