diff --git a/texmf/tex/latex/mmd6/letterhead/mmd-envelope.sty b/texmf/tex/latex/mmd6/letterhead/mmd-envelope.sty
index a2e633f4..64c816e6 100644
--- a/texmf/tex/latex/mmd6/letterhead/mmd-envelope.sty
+++ b/texmf/tex/latex/mmd6/letterhead/mmd-envelope.sty
@@ -23,8 +23,8 @@
 % You should have received a copy of the GNU General Public License
 % along with this program; if not, write to the
 %    Free Software Foundation, Inc.
-%    59 Temple Place, Suite 330
-%    Boston, MA 02111-1307 USA
+%    51 Franklin Street, Fifth Floor
+%    Boston, MA 02110-1301 USA
 
 
 \ProvidesPackage{mmd-envelope}
diff --git a/texmf/tex/latex/mmd6/letterhead/mmd-letterhead.sty b/texmf/tex/latex/mmd6/letterhead/mmd-letterhead.sty
index 889e7966..ec399ed4 100644
--- a/texmf/tex/latex/mmd6/letterhead/mmd-letterhead.sty
+++ b/texmf/tex/latex/mmd6/letterhead/mmd-letterhead.sty
@@ -23,8 +23,8 @@
 % You should have received a copy of the GNU General Public License
 % along with this program; if not, write to the
 %    Free Software Foundation, Inc.
-%    59 Temple Place, Suite 330
-%    Boston, MA 02111-1307 USA
+%    51 Franklin Street, Fifth Floor
+%    Boston, MA 02110-1301 USA
 
 
 \ProvidesPackage{mmd-letterhead}