Index: openacs-4/packages/acs-content-repository/www/doc/tutorial.html
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-content-repository/www/doc/tutorial.html,v
diff -u -N -r1.5 -r1.5.2.1
--- openacs-4/packages/acs-content-repository/www/doc/tutorial.html	28 Sep 2018 08:37:58 -0000	1.5
+++ openacs-4/packages/acs-content-repository/www/doc/tutorial.html	8 Apr 2019 13:00:51 -0000	1.5.2.1
@@ -9,7 +9,7 @@
       
       <h2>How to use the content repository</h2>
       
-      by <a href="http://rubick.com">Jade Rubick</a>
+      by <a href="http://web.archive.org/web/20180809082906/http://www.rubick.com/">Jade Rubick</a>
       
       <h3>Why use the content repository?</h3>
       
Index: openacs-4/packages/acs-core-docs/www/xml/developers-guide/tutorial-advanced.xml
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-core-docs/www/xml/developers-guide/tutorial-advanced.xml,v
diff -u -N -r1.60.2.1 -r1.60.2.2
--- openacs-4/packages/acs-core-docs/www/xml/developers-guide/tutorial-advanced.xml	10 Mar 2019 21:44:57 -0000	1.60.2.1
+++ openacs-4/packages/acs-core-docs/www/xml/developers-guide/tutorial-advanced.xml	8 Apr 2019 13:01:35 -0000	1.60.2.2
@@ -1099,7 +1099,7 @@
 <sect1 id="tutorial-hierarchical">
     <title>Hierarchical data</title>
     <authorblurb>
-      <para>by <ulink url="http://rubick.com:8002">Jade Rubick</ulink>
+      <para>by <ulink url="http://web.archive.org/web/20151128111517/http://www.rubick.com:8002/">Jade Rubick</ulink>
       with help from many people in the OpenACS community</para>
     </authorblurb>
 
Index: openacs-4/packages/acs-core-docs/www/xml/install-guide/credits.xml
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-core-docs/www/xml/install-guide/credits.xml,v
diff -u -N -r1.14 -r1.14.2.1
--- openacs-4/packages/acs-core-docs/www/xml/install-guide/credits.xml	4 Apr 2018 18:51:56 -0000	1.14
+++ openacs-4/packages/acs-core-docs/www/xml/install-guide/credits.xml	8 Apr 2019 13:02:14 -0000	1.14.2.1
@@ -245,7 +245,7 @@
 
         <listitem><para> 
 
-            <ulink url="http://www.linuxdoc.org/">The Linux Documentation
+            <ulink url="https://www.tldp.org/">The Linux Documentation
             Project</ulink> 
 
           </para></listitem>