Letter forms can be modern or ancient and do not have to be legible to be beautiful and evocative.
This little gem is the 1941, 14th edition of the Speedball Text Book.
It was my fathers. He was a sign painter as a young man.
The 24th edition is available today here. First published in 1915.
One of my many reference books for lettering. This one is a favorite.
You see "Modern Calligraphy" all over these days.
The Postman's Knock is a site I follow. She has fantastic tutorials, work sheets, supply reviews & ideas for calligraphers of all levels.