Note that this pattern was originally published in 1963 using Red Heart Knitting Worsted and was republished in 2003 using TLC Heathers.

Info from TLC book:
4 - ISLE OF ARAN
The name says it all! Knit a classic Aran style with cables, bobbles, and diamonds for ageless beauty.

Technique: Knit
Skill Level: Advanced

Made in TLC® “Essentials™”: 2313 Aran or TLC® “Heathers™”: 2459 French Lavender.

Pattern calls for 48 ounces of white Red Heart Worsted yarn.
GAUGE: End Strip–43 sts = 10 inches; Diamond Strip–15 sts = 4½ inches; Cable Strip–24 sts = 4¾ inches; Center Strip–41 sts = 10½ inches; All Strips–11 rows = 2 inches.

This pattern has been updated at Red Heart to be knit as one piece Isle of Aran Throw