Gee, guys, you know, we had theatre before 1900 and outside the US.
OEDIPUS REX and ANTIGONE
LYSISTRATA
MEDEA
THE TROJAN WOMEN
Lots of stuff by that guy Plautus
EVERYMAN
GAMMER GURTEN'S NEEDLE
SECOND SHEPHERD'S PLAY
THE RIVALS
SCHOOL FOR SCANDAL
THE CRITIC (and its counterpart, THE REHEARSAL)
Just about *anything* by that guy Bill Shakespeare
TIS PITY SHE'S A WHORE
FAUST (Goethe's version, not the opera)
WILHELM TELL
THE MASTER BUILDER
Just about *anything* by that guy George Feydeau
I mean, c'mon. Theatre did not begin with Williams, who, IMHO, is a bit overrated save for GLASS MENAGERIE and maybe (but only maybe) STREETCAR NAMED DESIRE. There's a whole wealth of drama out there, strtching across borders and back as far in time as you can possibly imagine.
http://docandraider.com