Not sure if wangrin dig those ones, but anyway better to keep them all here. Some absolutely fantastic materials from French National Library on the Imperial principalities.
Electorate of Saxony:
Early period uniforms:
1699-1720s: http://gallica.bnf.fr/ark:/12148/btv1b8427323t/f1.item
1730s: http://gallica.bnf.fr/ark:/12148/btv1b8427328w/f1.item
1685-1772 (early and middle): http://gallica.bnf.fr/ark:/12148/btv1b84274005/f1.item
Middle period uniforms:
1765: http://gallica.bnf.fr/ark:/12148/btv1b8427399z/f1.item
Late period uniforms:
1800-1806: http://gallica.bnf.fr/ark:/12148/btv1b84273262/f1.item
1802: http://gallica.bnf.fr/ark:/12148/btv1b84273907/f1.item
Landgraviate of Hesse-Cassel:
Middle period uniforms:
1769: http://gallica.bnf.fr/ark:/12148/btv1b84268808/f1.item
Late period uniforms:
1788: http://gallica.bnf.fr/ark:/12148/btv1b8427307q/f1.item
Electorate of Bavaria:
All periods uniforms:
http://gallica.bnf.fr/ark:/12148/btv1b8427305w/f1.item
Duchy of Braunschweig-Wolfenbüttel (part of the Hannoverian roster in I.S. mod):
Early period uniforms:
1702: http://gallica.bnf.fr/ark:/12148/btv1b8427354c/f1.item
Middle and Late periods uniforms:
1760-1790: http://gallica.bnf.fr/ark:/12148/btv1b8427352j/f1.item