Jacko and Jumpo Kinkytail

Howard Roger Garis, (April 25, 1873 – November 6, 1962) was an American author, best known for a series of books, published under his own name, that featured the character of Uncle Wiggily Longears, an engaging elderly rabbit. Garis and his wife were possibly the most prolific children's authors of the early 20th century. Many of his books were illustrated by Lansing Campbell.Garis was born in Binghamton, New York. He and his spouse Lilian Garis both worked as reporters for the Newark Evening News. He did some work on the side for WNJR also in Newark.
-WIikipedia