Whence fun_with_scan and with_sympy?

docs/html/index.html

@@ -153,6 +153,7 @@ by changing the pending expression and intermediate state is put there.</p>
 <p>§.6 References &amp; Further Reading</p>
 <p><a href="https://en.wikipedia.org/wiki/Joy_%28programming_language%29">Wikipedia entry for Joy</a></p>
 <p><a href="http://www.latrobe.edu.au/humanities/research/research-projects/past-projects/joy-programming-language">Homepage at La Trobe University</a></p>
+<p><a href="https://web.archive.org/web/20220411010035/https://joypy.osdn.io/">The original Thun/Joypy site</a></p>
 <hr>
 <p>Misc...</p>
 <p>Stack based - literals (as functions) - functions - combinators -

docs/html/notebooks/index.html

@@ -41,8 +41,6 @@ I'm in the process of rewriting them to use the Joy kernel.</p>
 <li><a href="/notebooks/TypeChecking.html">TypeChecking</a></li>
 <li><a href="/notebooks/Types.html">Types</a></li>
 <li><a href="/notebooks/Zipper.html">Zipper</a></li>
-<li><a href="/notebooks/fun_with_scan.html">fun with scan</a></li>
-<li><a href="/notebooks/with_sympy.html">with sympy</a></li>
 </ul>
 </body>
 </html>