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(1 - 7 of 7)
The Iron Spirit, or, The mystery of the Plains
100 feet above the housetops, or, The mystery of the old church steeple
The doomed city, or, The hidden foe of Plummerdale
Swamp Doctor, or, The man witch
Lost in the blizzard, or, The snow-bound school boys
Railroad Ralph, the boy engineer
The boy with the steel mask, or, A face that was never seen