Measurements
To fit chest
51 56 61 66 71 76 cm (20 22 24 26 28 30 in)
Length from back neck
30 34.5 38 45 49.5 53.5 cm (11¾ 13½ 15 17½ 19½ 21 in)
Sleeve seam
17.5 20.5 26.5 31.5 37 40.5 cm (7 8 10½ 12½ 14½ 16 in)

Each source has a different set of recommended yarns. The following is from the Wool O’the West version.

Materials
Knit-it-Kwik
3 3 4 4 5 5 100 gram balls
’Everest’ Chunky
4 4 4 5 5 6 100 gram balls
5 6 6 7 8 8 buttons
cable needle
Stitch holders.