Skytyping, an American Classic.
According to the Skytypers website:
The Skytyping process utilizes five airplanes that fly abreast, 250-feet apart and “type” up to 30 character messages in a dot-matrix-like pattern. When Skytyping, the airplanes create messages in the sky 5 miles long, as tall as the Empire State Building! Skytyping can be seen 15 miles in any direction or nearly 400 square miles!
…Text artists, imagine the possibilities!
[...] May 2008 I wrote about Skytypers, inviting text artists to “imagine the possibilities” of dot-matrix skywriting. Well, [...]