The Rover Boys in the Air

This line was started thirteen years ago by the publication of the first three volumes The Rover Boys at School On the Ocean and In the Jungle. I hoped that the young people would like the stories but I was hardly prepared for the very warm welcome the volumes received. The three books were followed by a fourth The Rover Boys Out West and then yearly by On the Great Lakes In Camp On Land and Sea On the River On the Plains In Southern Waters On the Farm On Treasure Isle At College and then by Down East where we last left our heroes and their friends.