This will be a bit arcane for most of you, but a major influence on the Dutch Calvinist philosopher, Herman Dooyeweerd, was Franz Xaver von Baader (1765-1841), whose work is now available online, albeit in difficult archaic German. J. Glen Friesen just emailed me the news that Google Books has digitized all 16 volumes of the Collected Works of Franz Xavier von Baader, the link to which is available at Friesen's website, along with links to several articles translated into English by Friesen.
[Hat tip to J.G.F.]