Antique Children’s Animal Book Set of 3

All these books have beautiful pictures of real animals. They have simple text. They are very old so they have have some damage to them as I tried to showing the pictures.
The 1st is Animal Babies by Ylla with words by Arthur Gregor. It has black and white pictures. It is from 1959.
The 2nd is Two Little Bears by Ylla. It has black and white pictures. It is from 1954.
The 3rd is Baby Farm Animals by the National Geographic Society. It is from their books for young explorers collection. It has color pictures.