Playing Underground: A Critical History of the 1960s Off-Off-Broadway Movement - Stephen J. Bottoms - Google Books

https://books.google.de/books?id=4_9ZxU0p7yYC&pg=PA292#v=onepage

"Scrupulously researched, critically acute, and written with care, Playing Underground will become a classic account of an era of hard-won free expression." -William Coco "At last---a book documenting the beginnings of Off-Off Broadway theater. Playing…