Digitize those Sources!
I was just scanning in some old journal article and book chapter photocopies (bowl season just around the corner) and converting them into OCRed-text PDFs. This is useful not just for back-up purposes, but for searchability as well. You can get relatively cheap office printer/copier/fax combos that come with an Automatic Document Feeder to feed in multiple pages automatically (like the name says). Assuming you have a recent version of Adobe Acrobat Pro (your university may have a cheap or even free license available), you can search across any number of PDF files for full words or ‘stems,’ and they say it’ll even do proximity searches. Best of all, it can save the search results to a single PDF file, showing the context of the term with links to the original! I’ve been wanting to do this kind of thing for 15 years – I was actually OCRing 1,000s of pages of primary sources back then (don’t want to think about how many days of work has been replaced by Google Books…), and I almost spent $300 on an ADF for my e-bay purchased scanner. Now with the confluence of digital text and search, an easy way is finally here. Awesome. Real digital humanists use open-source software that usually requires some programming skills, but I’ll go with what I’ve got for now. In addition to my database that I’ve had for a dozen years or more.
I was also downloading PDF articles from the library’s databases, and discovered that 1) War in History has had a good run of early modern articles over the past several years, and 2) Brill is the new publisher for the International Commission of Military History‘s Bibliography, and currently has the 2011 online edition for free viewing/download. Check it out.