It's "Lauder", not "Lauders"!
diff --git a/Doc/lib/libimaplib.tex b/Doc/lib/libimaplib.tex
index 44f5fb7..a9b0df5 100644
--- a/Doc/lib/libimaplib.tex
+++ b/Doc/lib/libimaplib.tex
@@ -1,7 +1,7 @@
-% Based on HTML documentation by Piers Lauders <piers@staff.cs.usyd.edu.au>;
+% Based on HTML documentation by Piers Lauder <piers@staff.cs.usyd.edu.au>;
% converted by Fred L. Drake, Jr. <fdrake@acm.org>.
%
-% The imaplib module was written by Piers Lauders.
+% The imaplib module was written by Piers Lauder.
\section{Standard Module \module{imaplib}}
\stmodindex{imaplib}