I asked this question three days ago and had zero responses. Thought I would try again. Maybe with better phrasing.

I am looking to learn about Old Saxony. The history of it and the culture. I am looking for some literature to read about the subject more than what I can read on wikipedia.

As a follow up question, I am wondering what are the primary sources we use to determine our knowledge on Old Saxony.

Thank you for any help.