This ink wash fashion illustration is by RBW and shows Davidow suits for winter, 1944. The signature Davidow soft tailoring is already in evidence by the soft belting and shirt-style jackets pictured here.
I include this Davidow set to reference earlier designs from this label (see previous Davidow post HERE). I also have an earlier post on RBW, the sign-off for Count Rene Bouet-Wilaumez, whose illustrations during the 1930's through 1950's were a signature look for "Vogue" magazine, HERE. On Pinterest I am building a Davidow board with both advertisements and garment photos.
Elsewhere online you can find Davidow posts at "The Vintage Traveler" HERE and at "Past Perfect Vintage" HERE.