I tried for some time to figure out a way to get to some AHA documents cited in an article, and eventually discovered that one of the nearby university libraries had fairly complete copies of just about everything I wanted. (Unfortunately, I've moved, so the one I know about isn't nearby any more.)

As explained to me then, in order to get their journal articles, the library has to have a "library membership." I don't know if that's so special that they might have less than full access to other stuff, but it is possible that you can find what your looking for at a "hard copy" library in your area.

They might even be able to at least confirm by phone whether or not they have the specific info you want, so that you don't have to negotiate getting access if they don't have it.

John