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Nick Carter Stories No. 145, June 19, 1915: An Unsolved Mystery; Or, Nick Carter's Goverment Case
Nicholas Carter and C. C. Waddell
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Nick Carter Stories No. 139, May 8, 1915: The Pressing Peril
Nicholas Carter and Roland Ashford Phillips
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Nick Carter Stories No. 147, July 3, 1915: On Death's Trail; or, Nick Carter's Strangest Case
Nicholas Carter and Ralph Boston
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Nick Carter Stories No. 148, July 10, 1915; The Mark of Cain; or, Nick Carter's Air-line Case
Nicholas Carter and Ralph Boston
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Nick Carter Stories No. 136, April 17, 1915: The Man They Held Back
Nicholas Carter and Roland Ashford Phillips
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Nick Carter Stories No. 150, July 24, 1915: The House of Fear; or, Nick Carter's Counterstroke.
Nicholas Carter and Ralph Boston
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Nick Carter Stories No. 152, August 7, 1915: The Forced Crime; or, Nick Carter's Brazen Clew.
Nicholas Carter and Ralph Boston
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Nick Carter Stories No. 151, July 31, 1915: The Mystery of the Crossed Needles; or Nick Carter and the Yellow Tong
Nicholas Carter and Ralph Boston
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