This four book series has four formats. (High School Girl Series) The second format (1915-1924) has two different dust jacket pictures. The earlier is the same as the first format books. Two variants of this cover dust jacket have been seen. No priority is known.

The only difference between the two books is the blue versus red lettered title. The book cover, advertisements and text are otherwise identical.

The second and later format dust jackets have been seen with four different cover color variations.

Earliest of this format

Later of this format

Latest of this format

Also noted in this second style of Format 2 is a brown uncoated dust jacket. Generally this paper was only seen in the earlier pre-1915 books. This book and one other I have seen were published (Based on the back of the book advertisements in the 1920’s.