The docs were very exciting when they first came to light. It didn't take long for discrepancies to show up, where they did not match facts. Over the years their credibility has eroded steadily as new information came to light. I recommend A Different Perspective, Kevin Randle's blog, as a place to search for bona fide facts. Randle is a careful researcher, he has been at it for decades, he knows all the players personally with few exceptions, and he has a lot of sense.
I disagree with Dolan's idea of how sophisticated they were. At the time, there were plenty of researchers and UFO buffs who could have done something similar, though most of course would not. (Some did pull of some less elaborate hoaxes though.) Yes it took a lot of work, and the perps would need access to lots of real docs to make it even superficially believable, but there were a few dozen people in the field who had the capability. They didn't fool many serious researchers for any significant length of time, which says a lot about how brilliantly they were made.