Here's the letter from Rupert Murdoch.
https://www.21cf.com/news/21st-century-fox/2016/roger-ailes-resigns-chairman-and-ceo-fox-news-channel
Now for the fallout. Probably most telling in the letter is the paragraph from the two Murdoch sons, referring to "our commitment to maintaining a work environment based on trust and respect. We take seriously our responsibility to uphold these traditional, long-standing values of our company.”
Here's the letter from Ailes to Rupert Murdoch:
http://www.drudgereport.com/flashnowa.htm