The New York Public Library’s Digital Gallery has color plates of German military uniforms dating from 1740 – 1900. These include the uniforms of German states such as Anhalt, Bavaria, Saxony, Hamburg, Hessen, Prussia, Nurnburg, Saxe-Weimar, Wurtemburg, and Westphalia.
For a terrific collection of color plates of French military costume from the Gauls to 1806, visit The New York Public Library digital galleries.
The New York Public Library Images collection has an amazing collection of the uniforms of Russian armed forces from 960 – 1900. Most are in color. All are useful.
Who needs Osprey Books? The New York Public Library has a gorgeous set of color plates of the uniforms of the Ancient Roman Army.
The New York Public library has put online its collection of color military plates. Most are hand colored block prints. The collection of Mexican Uniforms 1826 – 1906 could come in handy as a painting guide for the Texas Rebellion and the US – Mexican War, as well as the Maximilian period.