Here's a comment by Patrick Dussud on an old blog entry explaining the LISP origins of the GC:

https://blogs.msdn.microsoft.com/patrick_dussud/2006/11/21/h...

I thought I knew a thing or two about .NET, having used it since beta days, I had no idea LISP was used to bootstrap the original GC code. Fascinating stuff.

I've archived it here just in case:

http://archive.is/1qk25

Patrick is also interviewed on Channel9 and he talks about the GC. Not watched it yet:

https://channel9.msdn.com/Shows/Going+Deep/Patrick-Dussud-Ga...