William Marrion Branham: False Teacher

Sola scriptura is Latin for "by scripture alone." It is the idea the Bible contains all knowledge necessary for salvation and holiness. This, in fact, was one of my motives to dig deeper. Was William Branham really "sola scriptura?" I truly believe that all teaching should be filtered through the Bible. If it agrees with the Bible, then the teaching is accurate. If not, then we are following a false teaching, and likely a false teacher. Was William Branham "Sola Scriptura?"