Agreed - individual pieces of documentation are probably not what the OP wants. Indeed, the OP specifically asked for an "HTML Help file", which I interpreted to mean as being in the MS HTML Help Workshop "compiled help" format, or a single cross-linked *.chm file.

To that end, I have dug up a few promising-looking links which may enable the OP to go from the complete zipped HTML docs here, say, to CHM:

Web 2 CHM
Html2Hhc

HTH,