So here's my dilemma/question. Right in the middle of launching my genealogy blog on my father's family, two enormous tomes of research fell in my lap. One, I have been trying to get my hands on for two years (published in 1992), and the other I didn't even know existed until two weeks ago (published in 1978). They are both over 250 pages and are chock full of great information, new insights, great bibliographies and a ton of citations (many of them quite obscure). I will track down and check every one of them I can - but what about those I can't track down because they are not in digital form and/or live in some out-of-the-way archive 900 miles away? Can I still cite the paper I am using (warts and all)? Or do I cite the particular sources the author's used in writing these papers even if I can't check them personally? Both publications are written in French (fluent, but not my native language) which only makes it more challenging. The process could set my blog back for a year! Any wisdom/suggestions?