On the University of the Ryukyus library website, “Digital Archive of Ryukyu/Okinawa Special Collection,” you can find valuable materials written in various languages. There are a fair number of English translations to go along with these special collections, though the website itself is mainly in Japanese. That being said, anyone with an interest in Ryukyu history ought to check it out. There are not a whole lot of resources available to English speakers, so I figured I would share this. If I have time, I may type up some more notes regarding these documents.