TREE-META (1968) was SRI's last public metacompiler in a line that began with META II (1963), http://en.m.wikipedia.org/wiki/TREE-META

More recently, OMeta (2007) was developed at Alan Kay's VRI, http://en.m.wikipedia.org/wiki/OMeta

Yes, any good CS compiler design class should discuss this topic.

I don't understand this. 15$ for a 1964 paper?

http://dl.acm.org/citation.cfm?doid=800257.808896

That's the Association for Collecting Money for you.