One Life, One Love By: Mary Elizabeth Braddon

Orange-Yellow Diamond By: Joseph Smith Fletcher

Oscar the Detective Or, Dudie Dunne, The Exquisite Detective By: Harlan Page Halsey

Other House By: Henry James

Other People's Money By: Emile Gaboriau

Outside the Prison By: Richard Harding Davis

Owen Clancy's Happy Trail or, The Motor Wizard in California By: Burt L. Standish

Owen Clancy's Run Of Luck By: Burt L. Standish

Panther Eye By: Roy J. (Roy Judson) Snell

Passenger from Calais By: Arthur Griffiths

Patty's Friends By: Carolyn Wells

Paved With Gold By: Augustus Mayhew

Peter Ruff and the Double Four By: Edward Phillips Oppenheim

Peter the Brazen A Mystery Story of Modern China By: George F. (George Frank) Worts

Plague of Pythons By: Frederik Pohl

Poisoned Pen By: Arthur B. Reeve

Postmaster's Daughter By: Louis Tracy

Queen of Hearts By: Wilkie Collins

R. Holmes and Co. By: John Kendrick Bangs

Radio Boys Loyalty Or, Bill Brown Listens In By: S. F. (Samuel Francis) Aaron

Rayner-Slade Amalgamation By: Joseph Smith Fletcher

Red Diamonds By: Justin McCarthy

Red Hand By: Arthur Machen

Red Lamp By: Mary Roberts Rinehart

Red Rubber: The Story of the Rubber Slave Trade on the Congo By: Edmund Dene Morel

Red Window By: Fergus Hume

Remarkable Rogues: The Careers of Some Notable Criminals of Europe and America By: Charles Kingston

Report of the President's Commission on the Assassination of President Kennedy (The Warren Report) By: President's Commission on the Assassination of Presiden

Romance of Piracy By: Edward Keble Chatterton

Rough Justice By: Mary Elizabeth Braddon

Ruth Fielding At College or The Missing Examination Papers By: Alice B. Emerson

Ruth Fielding at Snow Camp Or, Lost in the Backwoods By: Alice B. Emerson