Merry Months in Pictures and Rhyme

There are no dates on this little book, I picked this up in a charity/thrift shop for 99 pence.
What has attracted me to this book is the innocent charm of the illustrations and how they illuminate the text warmly.

The condition of the book is excellent and has retained the sharp print quality, it has obviously been stored and forgotten.

The only details on the book are;
Published by W.H.C. London, W.1.
"SUCCESS SERIES"

At a guess I think the illustrations have a stylistic look of the late 1930's or early 1940's?