I can't find any author information in the linked doc but it reminds me of the work Donovan Kolbly was doing about that time on RScheme. I think RScheme was ini

I can't find any author information in the linked doc but it reminds me of the work Donovan Kolbly was doing about that time on RScheme. I think RScheme was initially intended to be a teachable implementation and I seem to recall a book project that went along with it (I was a grad student then and there, and was an RScheme user, but wasn't closely involved with Wilson's group).