Bar-20 Days by Clarence E. Mulford 1911
 
Bar-20 Days is a classic Western novel by Clarence E. Mulford, first published in 1911. It follows the adventures of Hopalong Cassidy and his friends, as they travel across the West in search of justice. The novel is full of thrilling action, humor, and suspense, and has been praised as one of the finest examples of the Western genre.
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