Footnote 29:

Cambon snack—This term eludes definitive explanation. It might refer to the brothers Paul and Jules Cambon. Paul was the French ambassador to Great Britain from 1898 to 1920; in 1904 he negotiated the Entente Cordiale between France and Britain that was the basis for their alliance in World War I. Jules was the French ambassador to the U.S. from 1897 to 1902 and was the French ambassador to Germany at the outbreak of World War I.
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Footnote 30:

Sir Thomas Henry Hall Caine (1853-1931) was a very popular British novelist and playwright in his day, but his works have now been largely forgotten. As of July, 2004, two of his books, [The Christian] and [ The Scapegoat], can be found in Project Gutenberg's library.
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Footnote 31:

cicerone—a sight-seeing guide
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Footnote 32:

suttee—the practice in India (now illegal) of a widow being burned to death (voluntarily or involuntarily) on her husband's funeral pyre
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Footnote 33:

In the late 1800's and early 1900's western air was thought to be efficacious in healing tuberculosis (no drug therapy was then available), and many patients were sent to San Antonio. This theme appears in other O. Henry stories. There was a history of tuberculosis in O. Henry's family, and while he never had overt signs of the disease, he was allowed to go (or sent) to Texas at age 20 partly for his health.
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