A fantastic Joseph Blair rifle is illustrated in living color on the KRA CD "Into the Bluegrass". I love this gun, and Russellville is only 15 miles away from me. It has no grease hole, though. It seems many relatively plain Kentucky made rifles have no grease hole or patchbox. If you're interested in Kentucky made rifles at all, you must get this picture CD.
Also the Book (actually, a two volume set) "Kentucky Gunmakers", by Shelby Gallien, who, I believe is a member here. Excellent with lots of biographical info.