Lydian is a calligraphic humanist sans-serif[1] typeface designed by Warren Chappell for American Type Founders in 1938.

It is available in bold, italic, and condensed,[2] as well as in a Cursive variant.

[3] The original foundry font was commissioned and cast by American Type Founders and included a stylistic alternate, a capital ‹A› with a cross bar.

[1] It is famously used as the font for the end credits on the TV show Friends.

The various members of the family were introduced over the course of eight years: