Those who were at school in the 1950s, 1960s and 1970s will remember a small magazine, Mathematical Pie, that was given out by Billy Duke and later mathematics masters. Mathematical Pie was published, and possibly is still published by the Mathematical Association.
Philip Levi has provided a copy of issue no. 30, which appeared in May 1960. To download this pdf file click here.
There is also a Mathematical Pie website - www.mathematicalpie.com.