However, I have been trying out some of the patterns on Free Vintage Crochet Patterns and I love how this little Baby cardigan jacket has turned out.
I used Double Knit (Sport Weight) and a 3.500mm (E/4) hook and It turned out perfectly for a 0-3 months baby 18 inches around the underarm.
I will tell you the pattern is written briefly, and at times you need to guess, as the usage of directions is minimal However, saying that I had no difficulty at all making this little cardigan.