Articles mentioning
John Wallen
- Health and Safety Exhibition, from No. 113 (November 7, 1963)
- Alert For Emergency, from No. 151 (January 25, 1967)
- Round the World in a Second, from No. 178 (April 23, 1969)
- A Tot For A Yacht, from No. 251 (May 21, 1975)