From The Pixie in the House by Laura Rountree Smith and illustrated by Clara Powers Wilson, 1915.

"Love has wings,—so people say; and thus love-letters fly away."  From Such Nonsense! by Carolyn Wells, 1918.

"I'm going to write a love letter for you, Popsy-wop!"  From The Judge, 1920.

INSTRUCTIONS: Click to make some changes.

You've heard of the "language of flowers," but there's a lesser-known "language of rocks" used to propel love letters through a window pane.  When a note is tied to a sedimentary rock, that symbolizes that the sender is feeling fragile and may fall to pieces easily.  It can also mean the sender wishes for a liason at the beach.  When a metamorphic rock is used, the sender is under intense pressure or feels in a tight squeeze.  It can also mean that a shiny (engagement) crystal might appear over time.  When an igneous rock is used, it means the sender's heat of passion is cooling, resulting in a hardening of the heart.  It can also symbolize that trapped gas bubbles are a problem.

Our illustration is from Drawing-Room Plays, selected and adapted from the French by Lady Adelaide Cadogan and illustrated by E. L. Shute, 1888.

It's difficult for newer generations to imagine what mail delivery was like before the advent of electronic communication.  Younger folks would find the old ways quite stilted, literally.  From The Mysteries of the Court of London by George William MacArthur Reynolds, 1849.