We'll be including the mysterious "Element 'X'" in a future edition of One-Letter Words: A Dictionary.  From Iowa State Teachers College's 1955 yearbook.

"Relax!  Unbend!  Do what you want to do whenever you want to do it!  That's the joy of living!"  From The Film Daily, 1938.

From Improvement Era, 1940.

From Purple Parrot, 1947.

From Purple Parrot, 1929.

"Witchcraft calling?"  From the Bombay Sunday Chronicle, 1936.

From Purple Parrot, 1929.

From Purdue University's 1891 yearbook.

From Purple Parrot, 1929.

From Colliers, 1916.

From Purple Parrot, 1926.

A spoof ad from If: A Nightmare in the Conditional Mood by Charles Graves and E. V. Lucas, illustrated by George Morrow, 1908.

From Motion Picture Herald, 1931.

"You're his wife ... who's his girlfriend?"  From The Australian Women's Weekly, 1965.  See The Collected Lost Meanings of Wedlock.

From Film Daily, 1933.

From The Daily Tar Heel, 1966.

From Collier's, 1915.

From Together, 1969.

From Improvement Era, 1950.

From Purple Parrot, 1937.