(1 - 8 of 8)
100 feet above the housetops, or, The mystery of the old church steeple
Railroad Ralph, the boy engineer
The boy with the steel mask, or, A face that was never seen
The doomed city, or, The hidden foe of Plummerdale
The Iron Spirit, or, The mystery of the Plains
Red Privateer, or, The first to float the stars and stripes
Swamp Doctor, or, The man witch
Tom Porter's search, or, The treasure of the mountains