These are intriguing. Two old children's books from a series that was published by Little Wonders from 1917 - 1922. I believe these are from the first edition. Each comes with three mini 5 1/2" records for children to sing-along as they read the text and view the cute graphics. I found this great web site that tells you all about them. These are in great condition. They measure about 6" x 6".
Volume #8: The Happy-Go-Lucky Bubble Book, 1917
Volume #3: The Animal Bubble Book, 1917