These ceramic cat bookends were made in Japan by Lefton's. Lefton's also made other variations of this white cat without the books. The Lefton's label and number shown here are from the right-side cat. The left-side cat had number 516.
The "twins" cats on this postcard look almost like bookends! This postcard was published by the Rotograph Co. It was mailed in 1906 before messages were allowed on the back of postcards. There is a faint message written on the front below the cats. It starts with "Did you get postal" and has something about a "letter."