It is definitely a well loved and used pattern book as you can see from the wrinkles in the pages!
Here you can see that some little one added a few scribbles to the pattern, but it's still readable, nonetheless.
Enlarging the instructions will make reading easier.
I'll be sharing a couple of other free vintage knitting patterns from the same book soon. These charming patterns come together quickly and would make lovely gifts for your favorite little toddler!