Purpose of B18 Blankets

[yanks87]

Going further down the rabbit-hole, from: Cigarette silks, cigar flannels and ribbons in quilts - Antique Quilt History, there was a discussion about tobacco ‘flannels’ – author indicated that the material was flannel, not felt. From the article:
“Another popular textile insert or premium was the tobacco flannel. These were made of a cotton flannel fabric and printed in many designs, again in themes similar to the themes used on the cigarette cards. Popular subjects were flags of all the different countries of the world and athletes participating in various sports.
As with the silks these flannels were distributed in or on, cigarette and tobacco products, with the larger flannels available in the premium catalogs, and sent to consumers in exchange for coupons, (which were also distributed in tobacco packaging.)
Tobacco flannels are sometimes referred to as “cigar felts”, and this is probably a misnomer, because it is not clear how, or if, they are associated with cigars. The inference is that the flannels were inserted into the boxes of cigars. But according to cigar box collector and historian Tony Hymen, there is no reason that they should be called “cigar felts”.
One might also question why they are called felts when they are obviously made from flannel. One advertisement does mention a “felt”, but the photo in the ad shows what appears to be the small rug, which is usually made up of a velveteen type pile or made of flannel. Perhaps this is a simple example of a word’s popular meaning changing over a century of years.
Another tobacco insert or premium is the small rug or carpet, which is sometimes confused with the flannels. J. R. Burdick in his book The American Card Catalog, catalogs the flannels and rugs separately, noting that the rug has a fringe and the flannel does not.

Rugs were distributed in the same way as the flannels, in or on cigarette or tobacco packaging. One advertisement for Egyptienne Straights cigarettes states that the consumer will receive one rug in each package, plus a free rug from the tobacco shop dealer, “to induce you to try these wonderfully good cigarettes”. The dealer was instructed to apply to the manufacturer for the supply of free rugs so they would have them on hand, in the shop, enabling them to participate in the promotion.”
The above section (in bold) is the same approach that was shown in the Sovereign ad for baseball felts (flannels). So, it would appear that whether it was a baseball felt or a rug, supplying free flannels or rugs to tobacco dealers was a standard practice within the American Tobacco Company.
Even further down the rabbit hole – the article displayed the back of a rug which has a stamp for Egyptienne Straights showing the Factory number 2153, and the 3rd District of New York.

All similar to the baseball tobacco felts mentioned earlier in this post.