Model Engineer - Vol. 134 - Issue: 3353 / 20th - 30th September 1968

Model Engineer - Vol. 134 - Issue: 3357 / 15th - 30th November 1968

Model Engineer - Vol. 140 - Issue: 3491 / 21st - 30th June 1974

Model Engineer - Vol. 141 - Issue: 3525 / 21st - 30th November 1975

Model Engineer - Vol. 139 - Issue: 3473 / 21st - 30th September 1973

Model Engineer - Vol. 134 - Issue: 3346 / 7th - 20th June 1968

Model Engineer - Vol. 134 - Issue: 3337 / 19th January 1968

Model Engineer - Vol. 134 - Issue: 3341 / 15th March 1968