In the 1959 timeframe when this edition
of Model Aviation was printed, Jetex engines were very popular, likely because
the era was really the dawn of the jet age. Everyone wanted to get in on the
act. American Telasco Limited exploited the craze by producing a wide range of model aircraft
and rockets that were designed specifically for the Jetex engines.
If you are interested, here is a page I have posted with
Vintage Model Aviation News Bulletin Articles:
Posted April 2, 2012