As it was mainly a French-Dutch War most of the sources are either in French or in Dutch. As it was a propaganda war as well, contemporary works like paitings, pamphlets and books should be read with great caution.
Most of the pamphlets can be found on the Dutch National Museum Site,
www.rijksmuseum.nl which can be accessed in English as well. The Dutch Royal Library has some nice works as well, but you need membership (quite cheap) to access all the online sources like EEBO.
Period writers and artists on the dutch side were Bouttats, Romeyn de Hooghe, and the writers Aitzema, Sylvius or Lambertus van de Bos(ch), most of their books can be found online on Google Books.
On the French side there's Gallica of course, the works of Lynn, and a search for Turenne on Google Books will help as well.
The fun part for me is the search in the local archives, town halls and musea and I am very fortunate with the presence of the local University and provincial musea.
Thanks! How I missed that site and the Google books is a mystery. With a little more googling I found Volume 1.