I know I am probably a bit late to the party...…. but I have received today Armies of Bismarcks Wars 1860-67 by Bruce Bassett-Powell. At first glance it only covers Prussia, but wow what a book. A description and drawings relating to each regiment. Solved an earlier question I had re 'brass' cuirasses. It has colour plates and OOBs. I think it cost £12.00 plus postage to Italy from Caliver. I am very pleased.
Note I am neither Caliver or Mr Bassett-Powell