This free pattern originally published in:
Jack Frost #40, Sweaters for Men and Boys (first edition) 
Size 9 to 10
1 Set Double Pointed Steel Needles No. 12
Jack Frost English Type Zephyr or Heathertone—2 2-oz. Balls
Cast on 60 sts. loosely. Divide on 3 needles. Join, being careful not to twist. Work in ribbing of K. 3, P. 2, for 3½ in.