The Rover Boys on Snowshoe Island; or, The Old Lumberman's Treasure Box

Edward Stratemeyer was an American writer (1862-1930). The main his genre is  juvenile fiction. He had Stratemeyer Literary Syndicate and it produced such books as the Rover Boys series, the Hardy Boys series, the Tom Swift series, the Bobbsey Twinsseries, and the Nancy Drew series. 

This book is a good example of classical series. The Rover Boys or The Rover Boys Series for Young Americans are popular juvenile series. They were published by Arthur M. Winfield (Edward Stratemeyer). Stratemeyer wrote the series with the purpose of moral lessons or educational idea. The original Rover Boys are the brothers Tom, Sam, and Dick Rover. What adventures do they face during these series? What kind of hardship do they manage? Are these series really for young people? Or not?