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diff --git a/doc/user/libraries.sgml b/doc/user/libraries.sgml
index ca2cb97..96814a7 100644
--- a/doc/user/libraries.sgml
+++ b/doc/user/libraries.sgml
@@ -92,6 +92,56 @@
     </para>
 
     <section>
+    <title>Building Libraries From Source Code or Object Files</title>
+
+      <para>
+
+      The previous example shows building a library from a
+      list of source files.
+      You can, however, also give the &b-link-Library; call
+      object files,
+      and it will correctly realize
+      In fact, you can arbitrarily mix source code files
+      and object files in the source list:
+
+      </para>
+
+      <para>
+
+      <programlisting>
+        Library('foo', ['f1.c', 'f2.o', 'f3.c', 'f4.o'])
+      </programlisting>
+
+      <para>
+
+      And SCons realizes that only the source code files
+      must be compiled into object files
+      before creating the final library:
+
+      </para>
+
+      <screen>
+        % <userinput>scons -Q</userinput>
+        cc -o f1.o -c f1.c
+        cc -o f3.o -c f3.c
+        ar rc libfoo.a f1.o f2.o f3.o f4.o
+        ranlib libfoo.a
+      </screen>
+
+      <para>
+
+      Of course, in this example, the object files
+      must already exist for the build to succeed.
+      See <xref linkend="chap-nodes">, below,
+      for information about how you can
+      build object files explicitly
+      and include the built files in a library.
+
+      </para>
+
+    </section>
+
+    <section>
     <title>Building Static Libraries Explicitly:  the &b-StaticLibrary; Builder</title>
 
       <para>