Measurements
Width above thumb
16, 18, 19, 21 cm
(6½, 7¼, 7½, 8½ in)

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

Materials
Minster DK 50 gram balls
40, 50, 60, 70 grams in three colours.