The free vintage double blanket knitting pattern dates from 1915 and was originally published as part of Beehive's Woolcraft: A Practical Guide to Knitting & Crochet.
DOUBLE BLANKET, knitted
"Double fabric" stitch, in which this Blanket is knitted, is eminently suitable for the purpose. It is done at one operation, is easy to master, while the double fabric produced gives the maximum warmth from a comparatively light weight of material. No equipment for Baby should be considered complete without at least one such "double fabric" Blanket for Cot or Pram. The original measured 32 in. by 42.
21st row. - K.10 (for the border - repeated at the beginning and end of each pattern row), *insert the needle, as if for knitting, into the next stitch, wrap the wool twice around the point of the right-hand needle, while slipping the stitch off the latter as in ordinary knitting; bring the woold between the needles to the front of the work, slip the next stitch, take the wool between the needles to the back of the work, repeat from * to the last 10 stitches, knit these.
22nd row. - Like the 21st row, but slipping the double stitch as one each time (this making one long, loose stitch).
Continue repeating the 22nd row until the blanket measures about 40 inches, or the required size.
Woolcraft: A Practical Guide to Knitting and Crochet, published in 1915 by Patons and Baldwin, offered knitting and crochet "recipes", and "Reliable Instructions on the Use of Knitting Wools in the production by hand of Serviceable Garments for Every-day Wear
The entire booklet has been scanned and made into three separate PDF files available free from the Antique Pattern Library.
If you would like information on the original vintage wool used to knit this double blanket, or wish to see more about celluloid knitting needles along with an illustrated knitting needle gauge, check out the first of these PDF files, which also includes basic knitting and crochet instructions, at Antique Pattern Library: Beehive Knitting Booklet Pages 1-26.
Lion Brand Yarn Vintage Styles for Today: More Than 50 Patterns to Knit and Crochet Redesigned for modern times, these vintage-style patterns use contemporary Lion Brand yarns, eliminating guesswork on gauge and yarn so common when using antique patterns. This well-reviewed book includes a comprehensive compilation of patterns plus fascinating archival and contemporary photographs.
Lion Brand Yarn Vintage Styles for Today: More Than 50 Patterns to Knit and Crochet 