We have a bunch and none of them had Katharine Holabird's author's list in the frontispiece. So, here's what I know is available (I've seen a lot still at Barnes and Noble):
Angelina Ballerina Angelina & Henry Angelina & Alice (my favorite!) Angelina's Baby Sister (my other favorite!) Angelina's Christmas (very sweet!) Angelina Ice Skates Angelina's Invitation to the Ball Angelina and the Princess Angelina on Stage
These were all published by Pleasant Company.
Angelina at the Palace was published by Viking.
These all have Helen Craig's incomparable watercolor illustrations, which make me swoon with their soft and creamy dreaminess.
There are more based upon the videos but I haven't any idea where they've disappeared to and they are definitely post Pleasant Company and were timed to coincide with the introduction of the Target versions of the dolls. (Which I simply can't stand. Cheap and silly with horrible illustrations based upon the garish coloring of the videos. Seriously icky.)
If you find any more titles published by Pleasant Company, I would love to know!!!!