Tweet Book released Roland West's "The Bat"

The book "The First Bat Man" has been published. It's a little book that compiles the tale of the making of Roland West's 1926 silent film "The Bat."
https://www.amazon.com/First-Bat-Man-Making-Roland/dp/1546689842/ref=sr_1_1?ie=UTF8&qid=1494951841&sr=8-1&keywords=The+First+Bat+Man%3A+The+Making+of+Roland+West%27s+1926+Movie"%20target="_blank

I have to admit, I'm intrigued! I love Roland West's work.
What are your sources?

[silentfilm]

About 6 years ago I dubbed a copy of "The Bat" from YouTube. Fairly good image quality with an interesting story to boot.
https://search.aol.com/aol/video?q=the+bat+1926+youtube&s_it=video-ans&sfVid=true&videoId=6575B427A4A2B7198E826575B427A4A2B7198E82&v_t=webmail-searchbox