The golden epoch of Yiddish theater in America: a historical overview
Digital Yiddish Theater Project
Yiddishpiel theater in Tel Aviv
Selected encyclopedian entries:
https://www.jewishvirtuallibrary.org/theater#yiddishtheater
http://www.yivoencyclopedia.org/article.aspx/theat...
https://en.wikipedia.org/wiki/Yiddish_theater