I know there was at least one person doing an X interface for Self. (At least an interface library, if not a whole GUI) Who/when/where? Could I get a copy of the objects?

I'll just repeat the request to please release some source. Even just Sparc source (since I may get to do my directed study on one rather than my underpowered basement 3/60). If the X interface is incomplete, and unlikely to completed soon, then my project may involve doing bunches of that. The project is an algebra assistant (a sort of sup'ed up equation editor)