I remember reading the Jim Corbett books when I was young and thinking about it I think I will maybe try and find them again. He stayed at the Treetops hotel at the same time as princess Elisabeth the night King George VI died and wrote in the hotel register. "For the first time in the history of the world, a young girl climbed into a tree one day a Princess, and after having what she described as her most thrilling experience, she climbed down from the tree the next day a Queen—God bless her."
Try "Life of Frederick Courtenay Selous, D.S.O." written by his friend J.G. Millais. Or maybe some of his own works. (some of them are free on project Gutenburg as they are over 100 years old) He has to be one of the most incredible characters ever.
Both of these men have national parks named after them.