The Riddle of ................
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Jolley, Elizabeth, author
Mr Scobie's riddle
Australian Large Print, 1987
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Riddle, Douglas F.
Analytic geometry / Douglas F. Riddle
PWS Publishing Co., 1992
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MacLean, David, author
The answer to the riddle is me : a memoir of amnesia
Houghton Mifflin Harcourt, 2014
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Gunther, John, 1901-1970, author
The riddle of MacArthur : Japan, Korea and the Far East
Harper Brothers, 1951
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