To anyone who is interested in this stuff I would strongly recommend the book “Skunk Works” by Ben Rich. Full of interesting history about stealth planes, and a masterclass on how to run a ragtag company.
Boeing was pretty stupid to accept the SSFL as part of the Rocketdyne deal because they assumed liability for cleaning it up. Someday, if it ever gets cleaned up enough, the State of California will take over the land and make it into a public park.