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White House mystery, or, Nick Carter's case for the president
An emperor at bay, or, Nick Carter defies the czar
unsolved mystery, or, Nick Carter's government case
Despard, the spy, or, The fall of Montreal
Eph, the mimic spy, or, The Frenchman's doom
Iron-Nerve Despard, or, The man of many disguises
Jack Harkaway and the spy
Jack Harkaway trapped
Loyal to the last, or, Fighting for the Stars and Stripes