diff --git a/enforcement-case-studies.tex b/enforcement-case-studies.tex
index 71adef6dfdb6fca5569dc6cf2bf34b77136ad81b..c5a2770e9a19f7602ad3fd14a83a6b25ae9486ba 100644
--- a/enforcement-case-studies.tex
+++ b/enforcement-case-studies.tex
@@ -27,7 +27,7 @@ Copyright \> \copyright{} 2014 \>  Denver Gingerich \\
 Copyright \> \copyright{} 2003, 2004, 2014 \> Free Software Foundation, Inc. \\
 \end{tabbing}
 
-\vspace{1in}
+\vspace{.1in}
 
 \begin{center}
 Authors of this part are: \\
@@ -36,18 +36,33 @@ Denver Gingerich \\
 Bradley M. Kuhn \\
 John Sullivan
 
-\vspace{3in}
-
 Copy editors of this part include: \\
 Martin Michlmayr
 
-\vspace{3in}
+\vspace{.2in}
 
 The copyright holders hereby grant the freedom to copy, modify, convey,
 Adapt, and/or redistribute this work under the terms of the Creative Commons
 Attribution Share Alike 4.0 International License.  A copy of that license is
 available at \url{https://creativecommons.org/licenses/by-sa/4.0/legalcode}.
 \end{center}
+
+\vfill
+
+This part includes material from many sources, including the following
+CC-By-SA-licensed published works: \\
+
+\begin{itemize}
+\item \textit{Enforcement Case Studies}, written by Bradley M. Kuhn and published by the Free
+  Software Foundation for its CLE courses  on 2004-01-20, 2004-08-24, and 2014-03-24.
+\end{itemize}
+
+However, this work is primarily composed of the many contributions it
+receives as a public, collaborative project.  Please
+\href{https://gitorious.org/copyleft-org/tutorial/history/master:enforcement-case-studies.tex}{review
+  its Git logs} for full documentation of all contributions.
+
+
 }
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