Ken Ward in the Jungle

Pearl Zane Grey was an American author best known for his popular adventure novels and stories that were a basis for the Western genre in literature and the arts; he idealized the American frontier. His novels and short stories have been adapted into 112 films, two television episodes, and a television series, Dick Powell's Zane Grey Theater.
One of Zane Grey's Ken Ward series of books for boys. A great adventure read from the great author of Western fiction.
Ken Ward and his kid brother Hal take a trip into the wilds of Mexico - Ken to try his hand at field work and Hal, a budding naturalist, to collect specimens. Chased by herds of wild pigs and in constant peril from alligators, tropical fever, and vicious ticks, the boys prevail. Ken succeeds in mapping a large expanse of country and Hal gathers many valuable specimens in this thrilling portrait of the beauties and terrors of the jungle.