evidently not a font but hand drawn lettering...

I think this example is the dictionary illustrations under not a font.

Sorry for the sarcastic tone, but this is definitely hand-lettered.

Yeah, I realized this. But, do you know of anyone who has recreated the font based on this artwork?

There is Scriptorium's Hendrix, but it's not really the same.

You may find something in a similar style by searching "psychedelic" or "nouveau" on MyFonts.com.

Many of the artists and designers that produced posters for the psychedelic 60s were inspired by posters from the 1920s -- 1930s plus later nineteenth century "circus" types. The difference being that things become a little "liquidy" when you are trippin', the result being the wonderful intertwined and melting letterforms.

Victor Moscoso was one of the more prolific designers of the genre.

The The Bindweed Press, San Francisco printed the bulk of the Avalon and Filmore concert posters.

SixtiesPosters.com is a great source for info on designers and posters.

Poster by Alfred Roller, Vienna 1903

Hmmmm... see any similarities in Victor Moscoso's 1967 poster?

which later spawned Mojo by Jim Parkinson