Here's a precursor to the 1960s psychedelic "liquid light shows" (note that the Wikipedia article was tagged as a "personal reflection" of "feelings," which seems somehow appropriate).  The effect of this 1910 postcard appears due to a printing misalignment of the cyan and magenta.  Viewers with color blindness may not see anything out of the ordinary.

Did you know that museums have their own weather stations?  Indeed, museum climate control is a big issue.

INSTRUCTIONS: Click to deepen the sunset.

Here's a precursor to the Michael Jackson lyric, "Beat it, just beat it."  Date uncertain.

INSTRUCTIONS: Click to retint.

You've heard of "His Master's Voice," but "His Master's Breath" smells like whiskey.  Date uncertain.

INSTRUCTIONS: Click to bring on the night.

Here's a precursor to Skype.  "In the year 2000.  Correspondance Cinéma-Phono-Télégraphique," from 1900.

Before the invention of the recreational vehicle, people had picnics in Winnebago, as opposed to having picnics in their own Winnebagos.  From 1913.

"Cross crossings cautiously" -- say that ten times fast!  This tongue-twister of a warning message is from 1922.

The moonlight over Jacksonville, Florida is obsolete in this scan from the Boston Public Library.  (By the way, the phrase "obsolete moonlight" delivers no accurate Google results.)

Before phone cameras and social media, people had to buy postcards of their dinners out.

It's not just any postcard that features a tear in the fabric of space.  One recalls: "The heavy buildings dissolved before his very eyes.  The solid walls and roofs were gone, the chimneys, railings, doors and porches vanished" (Algernon Blackwood, The Bright Messenger, 1921).

INSTRUCTIONS: Click to turn down the lights and turn on the fountains.

INSTRUCTIONS: Click to give Jacksonville an obsolete sunset

You'll have noticed the error in this postcard.  The bottom two images of Niagara Falls are identical, and as Heraclitus of Ephesus of said, we can't step into the same river twice (or look at the same waterfall twice).

"I'm in the arctic" -- a precursor to the tacky tourist postcard craze, from Letters from High Latitudes by Frederick Blackwood, 1858.  (See our previous tacky postcard precursor here, with a Florida alligator.)

Here's where postcards come from.