There are separate instructions for size 26 - 34 inch (child and teenager) and size 36 - 44 inch (adult).

Measurements
To fit chest
66, 71, 76, 81, 86, 92, 97, 102, 107, 112 cm
26, 28, 30, 32, 34, 36, 38, 40, 42, 44 inch
Length from back neck
37, 42, 48, 54, 60, 63, 64, 68, 70, 71 cm
14½, 16½, 19, 21½, 23½, 25, 27, 27½, 28 inch
Sleeve seam
25, 29, 35, 38, 43, 43, 43, 45, 48, 48 cm
10, 11½, 14, 15, 17, 17, 17, 18, 19, 19 inch

Each pamphlet has a different set of recommended yarns. The following are from the Poppleton version.

Materials
POPPLETON Double Double Knitting
Bijou Chunky
6, 7, 8, 9, 10, 11, 12, 13, 13, 14 balls
Pica
7, 8, 9, 11, 12, 13, 14, 15, 16, 16 balls
Dandy
9, 10, 12, 14, 15, 17, 18, 19, 20, 21 balls
Stitch holders
6, 6, 6, 7, 7, 8, 8, 8, 8, 8 buttons
Cable needle.