diff --git a/index.html b/index.html
index 1a454ab..067281f 100644
--- a/index.html
+++ b/index.html
@@ -288,10 +288,9 @@ <h2>Programming Languages and Tools</h2>
   <h2>Interesting Reads</h2>
   <br>
   
-  <ul>
-    <li><b><a style="text-decoration:none" href="https://math.libretexts.org/Bookshelves" target="_blank">Free Maths Books</a></b></li>        
-    <li><b><a style="text-decoration:none" href="https://www.openintro.org/" target="_blank">More Free Maths Books</a></b></li>     
-    <li><b><a style="text-decoration:none" href="https://eng.libretexts.org/Bookshelves/Computer_Science" target="_blank">Free Computer Science Books</a></b></li>        
+  <ul>  
+    <li><b><a style="text-decoration:none" href="https://www.joelonsoftware.com/2003/10/08/the-absolute-minimum-every-software-developer-absolutely-positively-must-know-about-unicode-and-character-sets-no-excuses/" target="_blank">The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)</a></b></li>        
+    <li><b><a style="text-decoration:none" href="https://www.joelonsoftware.com/2000/08/09/the-joel-test-12-steps-to-better-code/" target="_blank">The Joel Test: 12 Steps to Better Code</a></b></li>            
     <li><a style="text-decoration:none" href="https://code.energy/computer-science-distilled/" target="_blank">Computer Science Distilled</a></li>
     <li><a style="text-decoration:none" href="https://code.energy/computer-science-unleashed/" target="_blank">Computer Science Unleashed</a></li>
     <li><a style="text-decoration:none" href="https://www.amazon.com.au/dp/0393350649" target="_blank">The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies</a></li>
@@ -307,10 +306,7 @@ <h2>Interesting Reads</h2>
     <li><a style="text-decoration:none" href="https://www.amazon.com.au/dp/1575860104" target="_blank">Digital Typography</a></li>    
     <li><a style="text-decoration:none" href="https://jnd.org/books/the-design-of-everyday-things-revised-and-expanded-edition/" target="_blank">The Design of Everyday Things</a></li>
     <li><a style="text-decoration:none" href="https://www.chrisbernhardt.info/" target="_blank">Turing's Vision: The Birth of Computer Science</a></li>
-    <li><a style="text-decoration:none" href="http://www.theannotatedturing.com/" target="_blank">The Annotated Turing</a></li>
-    <li><b><a style="text-decoration:none" href="https://open.oregonstate.education/taleoftwosystems/" target="_blank">Tale of Two Systems</a></b></li>        
-    <li><b><a style="text-decoration:none" href="https://www.joelonsoftware.com/2003/10/08/the-absolute-minimum-every-software-developer-absolutely-positively-must-know-about-unicode-and-character-sets-no-excuses/" target="_blank">The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)</a></b></li>        
-    <li><b><a style="text-decoration:none" href="https://www.joelonsoftware.com/2000/08/09/the-joel-test-12-steps-to-better-code/" target="_blank">The Joel Test: 12 Steps to Better Code</a></b></li>        
+    <li><a style="text-decoration:none" href="http://www.theannotatedturing.com/" target="_blank">The Annotated Turing</a></li>       
   </ul>
   <br>
   <hr>