This pattern is from an old Patons Beehive Book, Issue 420.
(I've acquired quite a few of these little books over the last year.) Kitten Bonnet & Mitts called for Canadiana Fingering 4 ply or Patons Fuzzy Wuzzy. I would love to get my hands on some Fuzzy Wuzzy, too bad it's no longer available, I check on their site. The picture they show was done with it and it looks so cute. I just used some 4 ply baby yarn that I had in the old stash. It also used 3.25mm needle but I used a 3.5mm just because I was itching to try out my new knit picks needles that I got for Christmas. After wearing the hat on her for over a week now, it's gotten quite loose so when I do this hat again I will use the smaller needles. :-)