The secret of turning any day into Valentine's Day: it's Prof. Oddfellow's Penetralia.

George Parker writes: "Does being mesmerized by this video mean you hypnotized me? Or was my choice to surrender to your hypnotic dish of images and sounds a form of self-hypnotism? I choose the latter and am on my way to being certified!"

Long before Tim Burton combined Christmas and Hallowe'en, Valentine's Day and Hallowe'en merged.  From The Link, 1961.

When a giant box of Valentine's chocolates gives you a flat tire.  From Swarthmore's 1932 yearbook.

From Primary Education, 1914.

Here's where Cupid dips the arrows.  From Le Journal Amusant, 1922.

Here's our anagram for Valentine's Day.  (We had hoped that "put the saint back in Valentine's day" would be a Googlewhack, but there are 26 results for that phrase.)

What's the only continuous vaudeville?  Cupid's Punch & Judy show.  From Judge's Library, 1907.

"The origin of Saint Valentine's Day."  From The Harvard Lampoon, 1900.

The phrase "Cupid's mustache" delivers zero Google results.  The best we could find is a mustache taming wax called "Cupid's Blend," though "Cupid's mustache" is not explicitly mentioned.  From Welcome Guest, 1860.

Here's Saint Valentine, from Judy, Or The London Serio-Comic Journal, 1879.

INSTRUCTIONS: Click to make some changes.

From a Dutch New Year's letter, 1944, scanned by the Nationaal Archief.

From Valentine Verses by Richard Cobbold, 1827.

From The Book of Days by Robert Chambers, 1864.