Bernard Clayton's Russian black bread

Yes I've gone insane with bernard clayton.  I'm working on the Russian black bread pg 117-118. 

It's got quite a few ingredients but I just happened to have them.  Fresh milled some coarse rye.  We'll see how it turns out.  

Btw, in my research for this project, I noticed that king arthur appears to have borrowed bernard's recipe.  It's extremely similar with a couple of minor adjustments.  

One thing I'm having a hard time researching is whether or not this is truly a russian bread.  Lol!