I’m looking for a children’s book that I had in the mid 1970’s. It was a hardcover book and I believe it was oversized. The ‘first’ story was about a child (believe it was a girl) spending the day with her mommy. You then flipped the book upside down & over and there was a ‘second’ story about the child spending the day with his/her daddy and they went to the zoo. I remember a picture of them looking in the animal exhibit and the child is holding a balloon and I think they get ice cream. I’m pretty sure it’s people and not animals (i.e. not the Mercer Meyer little critter book).
Just Like Mommy/Just Like Daddy, by Patty and Bobby Simon, copyright 1952 Wonder Books
It reminds me of I’m My Mommy/ I’m My Daddy by Daniel Wilcox, 1975. It was a large white hardcover that you flip over to read the second book. The mommy and daughter go to the zoo and the Muppet girl pretends to be the mommy. There is a balloon in the story. In the other story, a boy and his father are taking a walk in the woods and the boy pretends to be the daddy. Both children realize that it’s hard to be a parent and that they’d rather be the child. https://www.librarything.com/work/book/146190078