Does anyone know of a good show -by- show character breakdown reference source?

There is an old book called Musical Notes that is great and was in my library in college.

Musical Notes : A Practical Guide to Staffing and Staging Standards of the American Musical Theater by Carol Lucha-Burns

The Musicals No One Came to See: A Guidebook to Four Decades of Musical-Comedy Casualties on Broadway, Off-Broadway and in Out-Of Town Try-Out, 1943

They have used copies on amazon.com for $47 first book-$60 second book.
The first has a lot of shows from 1915-1985 and gives character breakdown and song list along with a brief plot synopsis and what type of song each one is. I found it very useful in college.
The second one I'm not too sure about but have had it on my wishlist as it looks like a good reference guide as well.