diff --git a/LDP/guide/docbook/Bash-Beginners-Guide/abook.xml b/LDP/guide/docbook/Bash-Beginners-Guide/abook.xml
index be73f5ae..ae69e1b0 100644
--- a/LDP/guide/docbook/Bash-Beginners-Guide/abook.xml
+++ b/LDP/guide/docbook/Bash-Beginners-Guide/abook.xml
@@ -18,7 +18,7 @@
 <!ENTITY gloss SYSTEM "gloss.xml">
 <!ENTITY index-gloss SYSTEM "index-gloss.xml">
 ]>
-<book>
+<book id="Bash-Beginners-Guide">
 
 <bookinfo>
 <title>Bash Guide for Beginners</title>
@@ -121,7 +121,7 @@
 <section id="intro_04">
 <title>Revision History</title>
 <para>
-<revhistory>
+<revhistory id="revhistory">
 <revision>
 <revnumber>1.11</revnumber>
 <date>2008-12-27</date>
diff --git a/LDP/guide/docbook/Intro-Linux/abook.xml b/LDP/guide/docbook/Intro-Linux/abook.xml
index 08411bae..7e795861 100644
--- a/LDP/guide/docbook/Intro-Linux/abook.xml
+++ b/LDP/guide/docbook/Intro-Linux/abook.xml
@@ -18,7 +18,7 @@
 <!ENTITY app3 SYSTEM "app3.xml">
 <!ENTITY gloss SYSTEM "gloss.xml">
 ]>
-<book>
+<book id="Intro-Linux">
     <bookinfo>
         <title>Introduction to Linux</title>
         <subtitle>A Hands on Guide</subtitle>
@@ -121,7 +121,7 @@
         <section id="intro_04">
             <title>Revision History</title>
             <para>
-                <revhistory>
+                <revhistory id="revhistory">
 		<revision>
 		<revnumber>1.27</revnumber>
 		<date>20080606</date>
diff --git a/LDP/guide/docbook/LDP-Author-Guide/LDP-Author-Guide.xml b/LDP/guide/docbook/LDP-Author-Guide/LDP-Author-Guide.xml
index ae69958c..8f9f746f 100644
--- a/LDP/guide/docbook/LDP-Author-Guide/LDP-Author-Guide.xml
+++ b/LDP/guide/docbook/LDP-Author-Guide/LDP-Author-Guide.xml
@@ -151,7 +151,7 @@
 		</para>
     </abstract>
 	 
-    <revhistory>
+    <revhistory id="revhistory">
          <revision>
 	 <revnumber>4.8</revnumber>
 	 <date>2006-04-20</date>
diff --git a/LDP/guide/docbook/Linux-Dictionary/Linux-Dictionary.xml b/LDP/guide/docbook/Linux-Dictionary/Linux-Dictionary.xml
index 629033dc..aa897913 100644
--- a/LDP/guide/docbook/Linux-Dictionary/Linux-Dictionary.xml
+++ b/LDP/guide/docbook/Linux-Dictionary/Linux-Dictionary.xml
@@ -38,7 +38,7 @@
 ]>
 
 
-<book>
+<book id="Linux-Dictionary">
 
 <bookinfo>
 <title>Linux Dictionary</title>
diff --git a/LDP/guide/docbook/Linux-Filesystem-Hierarchy/Linux-Filesystem-Hierarchy.xml b/LDP/guide/docbook/Linux-Filesystem-Hierarchy/Linux-Filesystem-Hierarchy.xml
index ddd54c33..48bb658f 100644
--- a/LDP/guide/docbook/Linux-Filesystem-Hierarchy/Linux-Filesystem-Hierarchy.xml
+++ b/LDP/guide/docbook/Linux-Filesystem-Hierarchy/Linux-Filesystem-Hierarchy.xml
@@ -32,7 +32,7 @@
 <!ENTITY Sources SYSTEM "Sources.xml">
 ]>
 
-<book>
+<book id="Linux-Filesystem-Hierarchy">
 
 <bookinfo>
 <title>Linux Filesystem Hierarchy</title>
diff --git a/LDP/guide/docbook/Linux-Media-Guide/Linux-Media-Guide.xml b/LDP/guide/docbook/Linux-Media-Guide/Linux-Media-Guide.xml
index bc5432e4..3161c781 100644
--- a/LDP/guide/docbook/Linux-Media-Guide/Linux-Media-Guide.xml
+++ b/LDP/guide/docbook/Linux-Media-Guide/Linux-Media-Guide.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" []>
-<book>
+<book id="hLinux-Media-Guide">
   <bookinfo>
     <title>Guide to Managing Media and Public Relations in the Linux Community
 	</title>
@@ -28,7 +28,7 @@
       </para>
     </legalnotice>
 
-    <revhistory>
+    <revhistory id="revhistory">
       <revision>
 	<revnumber>1.1</revnumber>
 	<date>2005-04-21</date>
diff --git a/LDP/guide/docbook/Mobile-Guide/Mobile-Guide.xml b/LDP/guide/docbook/Mobile-Guide/Mobile-Guide.xml
index c31aebbd..5827616b 100644
--- a/LDP/guide/docbook/Mobile-Guide/Mobile-Guide.xml
+++ b/LDP/guide/docbook/Mobile-Guide/Mobile-Guide.xml
@@ -12,7 +12,7 @@
 
 ]>
 
-<book>
+<book id="Mobile-Guide">
 
 <bookinfo>
 <title>Linux on the Road</title>
diff --git a/LDP/guide/docbook/Pocket-Linux-Guide/Pocket-Linux-Guide.xml b/LDP/guide/docbook/Pocket-Linux-Guide/Pocket-Linux-Guide.xml
index 2eef2d3f..351433a3 100644
--- a/LDP/guide/docbook/Pocket-Linux-Guide/Pocket-Linux-Guide.xml
+++ b/LDP/guide/docbook/Pocket-Linux-Guide/Pocket-Linux-Guide.xml
@@ -15,7 +15,7 @@
 <!ENTITY appendix-a SYSTEM "appendix-a.xml">
 <!ENTITY license SYSTEM "fdl.xml">
 ]>
-<book>
+<book id="Pocket-Linux-Guide">
   <title>Pocket Linux Guide</title>
 
   <bookinfo>
@@ -31,7 +31,7 @@
       </affiliation>
     </author>
 
-    <revhistory>
+    <revhistory id="revhistory">
       <revision>
         <revnumber>3.1</revnumber>
 
diff --git a/LDP/guide/docbook/abs-guide/abs-guide.xml b/LDP/guide/docbook/abs-guide/abs-guide.xml
index 0323095f..4a806981 100644
--- a/LDP/guide/docbook/abs-guide/abs-guide.xml
+++ b/LDP/guide/docbook/abs-guide/abs-guide.xml
@@ -404,7 +404,7 @@
 <!ENTITY opprectable SYSTEM "opprec-table.xml">
 ]>
 
-<book>
+<book id="abs-guide">
   <bookinfo>
     <title>Advanced Bash-Scripting Guide</title>
     <subtitle>An in-depth exploration of the art of shell scripting</subtitle>
@@ -426,7 +426,7 @@
 
 
 
-    <revhistory>
+    <revhistory id="revhistory">
 
       <revision>
         <revnumber>6.5</revnumber>
diff --git a/LDP/guide/docbook/cpg/Custom-Porting-Guide.xml b/LDP/guide/docbook/cpg/Custom-Porting-Guide.xml
index ed7c46d9..68a0dc44 100644
--- a/LDP/guide/docbook/cpg/Custom-Porting-Guide.xml
+++ b/LDP/guide/docbook/cpg/Custom-Porting-Guide.xml
@@ -3,7 +3,7 @@
 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
 ]>
 
-<book>
+<book id="cpg">
 
 <bookinfo>
 <title>Custom Linux: A Porting Guide</title>
@@ -27,7 +27,7 @@
 	<contrib>without whom this wouldn't be possible</contrib></othercredit>
 </authorgroup>
 
-<revhistory>
+<revhistory id="revhistory">
       <revision>
 	<revnumber>2.1</revnumber>
 	<date>2003-03-08</date>
diff --git a/LDP/guide/docbook/espk-ug/espk-ug.xml b/LDP/guide/docbook/espk-ug/espk-ug.xml
index a4084bf1..2310f7c8 100644
--- a/LDP/guide/docbook/espk-ug/espk-ug.xml
+++ b/LDP/guide/docbook/espk-ug/espk-ug.xml
@@ -14,7 +14,7 @@
 <para>This document helps Emacspeak users become familiar with Emacs as an audio desktop and provides tutorials on many common tasks and the Emacs applications available to perform those tasks. </para>
 </abstract>
 		
-<revhistory>
+<revhistory id="revhistory">
 
 <revision><revnumber>1.3</revnumber>
 <date>July 24,2002</date>
diff --git a/LDP/guide/docbook/linux-ip/revision.xml b/LDP/guide/docbook/linux-ip/revision.xml
index a3a3b693..faaed63e 100644
--- a/LDP/guide/docbook/linux-ip/revision.xml
+++ b/LDP/guide/docbook/linux-ip/revision.xml
@@ -1,6 +1,6 @@
 <!-- $Id$ -->
 
-    <revhistory>
+    <revhistory id="revhistory">
 
       <revision>
         <revnumber>0.4.4</revnumber>
diff --git a/LDP/guide/docbook/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3.xml b/LDP/guide/docbook/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3.xml
index 0cd9b2b2..ccc06b49 100644
--- a/LDP/guide/docbook/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3.xml
+++ b/LDP/guide/docbook/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3.xml
@@ -2,7 +2,7 @@
 <!DOCTYPE book PUBLIC '-//OASIS//DTD DocBook XML V4.1.2//EN' 
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" []>
 
-<book><!-- <?dbhtml filename="coverpage.html"?> -->
+<book id="solrhe"><!-- <?dbhtml filename="coverpage.html"?> -->
           
          
          <bookinfo>