Vintage knitting pattern, Helmets & Balaclava

Various sizes:

2 sizes: Peaked Helmet 1/2 years, 2/3 years
2 sizes: Moss Stitch Helmet 33/4 years, 4/5 years.
2 sizes: Ribbed Balaclava 5/7 years, 7/9 years.

Double Knitting yarn

Shop stamp on the front cover and the pattern has some grubby marks, plus some small tears along the edge.
Circa 1940/s1950s