Measurements
Chest sizes
50, 55, 60, 65 cm (20, 22, 24, 26 in)
Finished measurement
65, 71, 77, 82 cm (26, 28½, 31, 33 in)
Length to back neck
36, 40, 44, 48 cm (14, 15½, 17½, 19 in)
Sleeve length
19, 23, 27, 32 cm (7½, 9, 10½, 12½ in)

Each source of this pattern has a different set of recommended yarns.
The following are from the Cygnet Wools version of the pamphlet.

Materials
Cygnet Special Aran or Grousemoor Aran
1, 1, 1, 2 400 gram balls
Kiddies Aran
3, 4, 4, 5 100 gram balls
Cable needle
6, 6, 7, 7 buttons.