This site has 1000's of original images digitised for you. It covers all periods from the Dark ages through to the end of the 19thC. Lots and lots of 30 years war images. Most nations covered, but it is especially good on French and all of those small German states.
http://digitalgallery.nypl.org/nypldigital/dgtitle_tree.cfm?title_id=614958&level=2&tword= (http://digitalgallery.nypl.org/nypldigital/dgtitle_tree.cfm?title_id=614958&level=2&tword=)
Cheers, Rob :)
Wow! Nice one Rob - that's top-notch 8)
The previous URL was for France, this one gives the full list of countries.
http://digitalgallery.nypl.org/nypldigital/dgtitle_tree.cfm?title_id=269277&level=1&tword= (http://digitalgallery.nypl.org/nypldigital/dgtitle_tree.cfm?title_id=269277&level=1&tword=)
:)