Everyone has heard of the Seventh-day Adventists, a religion equally famous for giving the world cornflakes as it is for bizarre interpretations of the book of Revelation.
Much less well known are it's sibling movements; Adventist bodies that went in other directions following the Great Disappointment. One such group is the Church of God (Seventh Day), a denomination that paradoxically is both more and less mainstream than the SDA church, depending on the criteria you choose.
Now, thanks to Douglas Becker, Ken Durham's 1980s Calvin College master's thesis, History of the Church of God (Seventh Day), is available online.
While obviously a bit dated, the thesis will be a helpful resource for anyone interested in the origins and development of the movement, including the defections of Andrew Dugger and Herbert Armstrong. This is however anything but a detailed history; the entire document runs to under 50 pages!
Given its brevity it's not surprising that Durham's treatment is a bit lightweight, and there are some irritating typos and flaws (for example the Worldwide Church of God is referred to as the World Wide Church of God, which is just plain sloppy), but presumably standards at Calvin College have never been particularly rigorous. Durham's work nevertheless provides a solid, broad overview. Later this year Robert Coulter's The Journey: A History of the Church of God (Seventh Day) is due to be released, hopefully with greater accuracy, detail and substance.