In the second section of the srfi document at
https://srfi.schemers.org/srfi-1/srfi-1.html points to
http://www.ai.mit.edu/~shivers/
(Html file line 150, char 16)

This page doesn't exist any more.

Pehaps is can be replaced with http://www.ccs.neu.edu/home/shivers/ ,
or, perhaps,
https://web.archive.org/web/19991007002010/http://www.ai.mit.edu/~shivers/,
although I am not sure about that.

Is it really a good idea to include references to volatile material in
an srfi?