Must have books for Vintage Computing

[Wai-Sun Chia]

I'm building my personal library for vintage computing. I need to
probe the collective wisdom of the list in what books must a "wannabe"
collector (like me) should have on his/her bookshelf.

Although I collect primarily DEC stuff, I don't want my knowledge to
be just restricted to what DEC had to offer.

p.s. Don Lancaster's books are the first on my list. :-)

/wai-sun