The Happy Hollisters and the Whistle-Pig Mystery: HARDCOVER
The Happy Hollisters and the Secret of the Lucky Coins: West
The Happy Hollisters and the Merry-Go-Round Mystery: HARDCOVER
The Happy Hollisters at Pony Hill Farm: HARDCOVER Special Edition
1964 'The Happy Hollisters and the Whistle Pig Mystery', SCARCE
The Happy Hollisters and the Trading Post Mystery (Paperback
Vintage the Happy Hollisters and the Whistle Pig Mystery Jerry
A neat old vintage copy.
The Happy Hollisters and the Mystery in Skyscraper City (The Happy Hollisters, No. 17)
The Happy Hollisters 33-Book Complete Collection: Jerry West