National Trust

I emailed the National Trust about a week ago and still haven't had a reply

but I decided to try their Facebook page too (which claimed that they usually reply within 1 hour)

and that they did!

Hello Jay, thanks for getting in touch. You're right - we do have some holiday cottages close to How Hill Tower. How Hill Tower is close to Studley Royal and the local team will have lots of information for you about the history of the tower. We've spoken to the team about your interest and they would be keen to tell you a little more about How Hill Tower. You can call them on 01765 608888 and hold to speak to someone directly. Good luck with your book 

  I called them! I spoke to a really helpful lady on the phone who took my details and said that she would email me anything she could find. She wished me luck with my book.