Model Engineer - Vol. 134 - Issue: 3349 / 19th - 31st July 1968

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

Model Engineer - Vol. 134 - Issue: 3355 / 18th - 31st October 1968

Model Engineer - Vol. 134 - Issue: 3354 / 4th - 17th October 1968

Model Engineer - Vol. 134 - Issue: 3359 / 20th - 31st December 1968

Model Engineer - Vol. 139 - Issue: 3471 / 17th - 31st August 1973

Model Engineer - Vol. 141 - Issue: 3523 / 17th - 31st October 1975

Model Engineer - Vol. 142 - Issue: 3551 / 17th - 31st December 1976