(1921 - 1999)
Robert Henneberger was a prolific American illustrator. He was born in Baltimore, Maryland. He served in the U.S. Navy during World War II. After the war, he attended the Rhode Island School of Design. In 1950, he married Kathryn Lorraine Dalton.
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Julie’s Secret Sloth (1953)
Julie’s father says no pets, but Julie goes ahead and buys a two-toed sloth named Sampson and soon discovers she can’t keep him a secret.
Read online at archive.org.
Stowaway to the Mushroom Planet (1956)
David and Chuck take Theo Bass, Tyco Bass’s cousin, to the Mushroom Planet, unaware that a young astronomy professor has stowed away on board.
The Wonderful Flight to the Mushroom Planet (1954)
David and Chuck are approached by their neighbor Mr. Bass to build a space ship.