[GaltMidas]

It’s a shame that those Minsky links have been broken for at least a few months now. Does anyone know where this material is?

[perihelions]

Looks like someone is mirroring it here,

https://www.mit.edu/~dxh/marvin/web.media.mit.edu/~minsky/mi...

Looks identical to the old captures on archive.org, so that checks out.