diff --git a/parser.y b/parser.y
index 358cc0d..99daf73 100644
--- a/parser.y
+++ b/parser.y
@@ -1,3 +1,28 @@
+/*
+ * t2p: Create a PDF file from the contents of one or more TIFF
+ *      bilevel image files.  The images in the resulting PDF file
+ *      will be compressed using ITU-T T.6 (G4) fax encoding.
+ *
+ * Parser
+ * $Id: parser.y,v 1.17 2003/02/21 00:49:11 eric Exp $
+ * Copyright 2001, 2002, 2003 Eric Smith <eric@brouhaha.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.  Note that permission is
+ * not granted to redistribute this program under the terms of any
+ * other version of the General Public License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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 USA
+*/
+
 %{
   #include <stdbool.h>
   #include <stdint.h>
diff --git a/scanner.l b/scanner.l
index 2b80d6e..f65a7d8 100644
--- a/scanner.l
+++ b/scanner.l
@@ -1,5 +1,26 @@
 /*
-$Id: scanner.l,v 1.16 2002/08/25 22:02:31 eric Exp $
+ * t2p: Create a PDF file from the contents of one or more TIFF
+ *      bilevel image files.  The images in the resulting PDF file
+ *      will be compressed using ITU-T T.6 (G4) fax encoding.
+ *
+ * Lexical analyzer
+ * $Id: scanner.l,v 1.17 2003/02/21 00:49:11 eric Exp $
+ * Copyright 2001, 2002, 2003 Eric Smith <eric@brouhaha.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.  Note that permission is
+ * not granted to redistribute this program under the terms of any
+ * other version of the General Public License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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 USA
 */
 
 %option case-insensitive