I found a froglok-skin tome lying in a hall leading to the Outer Stronghold of Ykesha. It looks like it was discarded or dropped by one of the residents of the Stronghold. However it ended up where I found it, the book does not appear to have been taken good care of, as many pages are missing. This appears to be a primer of sorts, recounting the deeds of Warlord Ykesha. It's possible other copies of the book or copies of the pages may be around that will allow me to complete the tome.