Hi again,
really a lot of Prussian Uniforms sorted chronologically are here:
http://www.grosser-generalstab.de/
Click: Inhalt
Click: Deutsche Uniformen v. H. Knötel d.J. u. M. Letzius
Email to: thuemmler@feldpostamt.de but you have to type 'Militaria' as
subject.
Sven