A few years ago, my son and I made a genealogical pilgrimage to Dunkirk (in February!) to research family. I discovered a good deal of information at the Barker Library in Fredonia. The index to the local newspaper was particularly helpful. Later, I borrowed microfilm from SUNY and researched back issues of the Dunkirk Observer. They will send you film if you ask for it. Also, the Dunkirk Historical Museum is full of goodies. Good luck!