Columbia subject headings:
Americans--Europe--Humor.
Americans--Middle East--Humor.
Autobiographies.
Europe--Description and travel--Humor.
Humor.
Middle East--Description and travel--Humor.
Travel writing.
Twain, Mark, 1835-1910--Travel--Europe.
Twain, Mark, 1835-1910--Travel--Middle East.
Voyages and travels.
Harvard subject headings:
Europe--Description and travel.
Middle East--Description and travel.
Twain, Mark, 1835-1910--Travel--Europe.
Twain, Mark, 1835-1910--Travel--Middle East.
Voyages and travels
Princeton subject headings:
Europe--Description and travel.
Middle East--Description and travel.