Thanks for the pointer, Brian.  It may be the best bet.  Turns out that
the author, Aleksi︠e︡ĭ Aleksandrovich Bobrinskīĭ, was born in 1852, 
died
in 1927, and the book was published in 1910.  The dates indicate that
what he wrote ought to show the tools of the early period needed for
the research.

I've looked at some Estonian cooper's tools, and they seemed probable.

The Library of Congress has a copy or two, but I can't find any for
sale.  Might need to contact Underhill.  LOL.  I'm missing one of his
three favorite books.

Gratefully,

Mike in Sacto