Updating here with a few additions.
I want to post this on my other blog coolbooks4kids2read.blogspot.com as well (At least the intention is there). It's always a "dangerous" thing for me to follow the "customers who bought this item also bought" or on the library site "you may also like". I find more and more books. Some of these series you may have already heard about, but others are developed along the same idea. Still others are always adding more. They combine literature with grammar, phonics, etc. This provides an alternative to the usual workbook method. Also I may not have all the books listed by the author or series, so you will have to do a little homework research. These are not in alphabetical order. Because of time, I don't offer any reviews. I will be updating as we find more.
The Vowel Family: A Tale of Lost Letters by Sally M. Walker
Silent Letters Loud and Clear by Robin Pulver.
Punctuation Takes a Vacation by Robin Pulver
Merry-Go-Round (World of Language) by Ruth Heller.
The Girl's Like Spaghetti: Why, You Can't Manage without Apostrophes! by Lynne Truss (author of Eats, Shoots and Leaves: Why Commas Really Do Make a Difference!)
Eats, Shoots & Leaves: Why, Commas Really Do Make a Difference! by Lynne Truss
Twenty-Odd Ducks: Why, every punctuation mark counts! by Lynne Truss
Punctuation Celebration by Elsa Knight Bruno
Hairy, Scary, Ordinary: What Is an Adjective? (Words Are Categorical) by Brian P. Cleary (Other books in this series not listed here).
If You Were a Homonym or a Homophone (Word Fun) by Nancy Loewen (Other books in this series. Not all the same author).
Penny and the Punctuation Bee by Moira Donohue
The Punctuation Station by Brian P. Cleary