Contemporary Performance

Henslowe's Diary: the personal record of the owner of The Rose theater:

http://www.henslowe-alleyn.org.uk/essays/henslowediary.html

http://books.google.com/books/about/Henslowe_s_Diary_Text.html?id=3jYVAAAAYAAJ

Primary sources related to contemporary stagings:

http://shakespearestaging.berkeley.edu/index.php?option=com_content&view=article&id=31&Itemid=191

On Playing Companies:
http://en.wikipedia.org/wiki/Playing_company

to sense what has been lost:
http://www.lostplays.org/index.php/Main_Page

reviews of current period productions on Broadway:

http://www.nytimes.com/2013/11/11/theater/reviews/twelfth-night-and-richard-iii-with-mark-rylance.html?_r=0

http://www.newyorker.com/arts/events/theatre/twelfth-night-richard-iii-belasco-theatre