From 1970.

Nuns are born of eggs, and "their love of slightly-elevated nesting-places has long been observed."  We learn this in The Dovecote and the Aviary by Edmund Saul Dixon, 1851.

The "chicken or the egg?" riddle would seem to miss the point.  This ad from J. Bolgiano & Son's seed catalog, 1921, shows that the chick precedes the egg but that both are preceded by Oculum (a germicide).

Here's some divination by egg yolk, date uncertain.

This is the symbol left in the crib after the Lindbergh baby was famously taken away.  "There has been no genuinely convincing analytic work done on [this symbol] with respect to the Lindberg story" (Jerry Kroth, The Lindbergh Kidnapping, 2011).  [Note that the three black rectangles are actually holes that were punched in the paper and are not technically part of the design.]  The shaded object in the center is, of course, the "black egg" of alchemy, symbolizing the nigredo (a stage of putrefaction; the final step toward the "philosopher's stone" of enlightenment) and expressing "the precarious balance of the hermaphrodite, exalted by a [threatened] equilibrium" (Johannes Fabricius, Alchemy: The Medieval Alchemists and Their Royal Art, 1994).

Humpty Dumpty didn't just sit on a wall, as we see in this Croatian postcard, date uncertain.

Don't ask which came first when it comes to the cycle of infection.  From Diseases of Poultry, 1915.

The umlaut over the second O is here revealed to refer to rabbit ears.  From The Oölogist, 1896.

"Eggspatiation," circa 1890.

Here's a precursor to the Transformers, c. 1890.  When the wheels hatched, it became a flying machine.

We've answered an age-old question.  Which came first: the inverted cross of black metal or the egg?  Well, it's actually something of a paradox, as an egg with an inverted cross came first.  Our illustration appears in De la Formation du Blastoderme dans l'Oeuf d'Oiseau by M. Mathias Duval, 1884.

Here's the 4 a.m. "Egg Song" from Cartoons Magazine, 1917.  We didn't make a recording of this, as our exclusive recording of the sound of "turtle heaven" didn't exactly set the world on fire.

Here's a basket of eggs from Old-Time Schools and School-Books by Clifton Johnson, 1904.

From Marion County in the Making, 1917.

Forget the chicken -- which came first, the dove or the egg?  From The Peace Egg, a Mumming Play, 1835.