Here is the dust jacket for book #6 in this series: Miss Appolina’s Choice. Two different covers have been seen as of this time. The basic cover picture is the same but the books have different colors and one of the covers has gold gilt. The interior/text of the books is identical.

The earlier versus the later editions can be identified. It is easy with the dust jacket. The earlier dust jacket has no colors. It is only in black and the background brown. The later dust jackets list eleven titles from this series on the reverse. If there is gold gilt on the cover, it is an earlier edition.

Also the earlier books are 7.125 x 5.125. The later books are 6.75 x 5.