This is just from memory, but here's what I got:
Book Club:
What Do You Do?
I Can Do it Myself
(I also have some of the titles previously listed, BTW "When I'm as Big as Freddy" is one of my favorites).
Little Golden Books:
Cookie Monster and the Cookie Tree
The Monster at the End of This Book
The Day Snuffy had the Sniffles
Big Bird Brings Springtime to Sesame Street
The Many Faces of Ernie
Bert's Hall of Great Inventions
Not sure where these came from:
Don't Cry Big Bird
Spring Cleaning
Ernie's Big Mess
Up and Down