diff --git a/xdocs/style/stylesheets/design2project.xsl b/xdocs/style/stylesheets/design2project.xsl
index 8d23940..63a4868 100644
--- a/xdocs/style/stylesheets/design2project.xsl
+++ b/xdocs/style/stylesheets/design2project.xsl
@@ -1,5 +1,23 @@
 <?xml version="1.0"?>
 
+  <!--
+   * Licensed to the Apache Software Foundation (ASF) under one
+   * or more contributor license agreements. See the NOTICE file
+   * distributed with this work for additional information
+   * regarding copyright ownership. The ASF licenses this file
+   * to you under the Apache License, Version 2.0 (the  "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *     http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+  -->
+
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
 
   <xsl:template match="/">
diff --git a/xdocs/style/stylesheets/designdoc2html.xsl b/xdocs/style/stylesheets/designdoc2html.xsl
index cfd7152..b27d6f4 100644
--- a/xdocs/style/stylesheets/designdoc2html.xsl
+++ b/xdocs/style/stylesheets/designdoc2html.xsl
@@ -1,5 +1,23 @@
 <?xml version="1.0"?>
 
+  <!--
+   * Licensed to the Apache Software Foundation (ASF) under one
+   * or more contributor license agreements. See the NOTICE file
+   * distributed with this work for additional information
+   * regarding copyright ownership. The ASF licenses this file
+   * to you under the Apache License, Version 2.0 (the  "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *     http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+  -->
+
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
 
   <xsl:param name="stylebook.project"/>
diff --git a/xdocs/style/stylesheets/done.xsl b/xdocs/style/stylesheets/done.xsl
index a7e4753..b32524e 100644
--- a/xdocs/style/stylesheets/done.xsl
+++ b/xdocs/style/stylesheets/done.xsl
@@ -1,5 +1,23 @@
 <?xml version="1.0" encoding="ISO-8859-1" ?>
 
+  <!--
+   * Licensed to the Apache Software Foundation (ASF) under one
+   * or more contributor license agreements. See the NOTICE file
+   * distributed with this work for additional information
+   * regarding copyright ownership. The ASF licenses this file
+   * to you under the Apache License, Version 2.0 (the  "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *     http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+  -->
+
 <!-- DOCTYPE xsl:stylesheet -->
 
 <!-- XSL Style sheet, DTD omitted -->
diff --git a/xdocs/style/stylesheets/spec.xsl b/xdocs/style/stylesheets/spec.xsl
index 26d73bd..1268928 100644
--- a/xdocs/style/stylesheets/spec.xsl
+++ b/xdocs/style/stylesheets/spec.xsl
@@ -1,5 +1,23 @@
 <?xml version="1.0" encoding="ISO-8859-1" ?>
 
+  <!--
+   * Licensed to the Apache Software Foundation (ASF) under one
+   * or more contributor license agreements. See the NOTICE file
+   * distributed with this work for additional information
+   * regarding copyright ownership. The ASF licenses this file
+   * to you under the Apache License, Version 2.0 (the  "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *     http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+  -->
+
 <!DOCTYPE xsl:stylesheet [
 <!ENTITY copy   "&#169;">
 <!ENTITY nbsp   "&#160;">
diff --git a/xdocs/style/stylesheets/xml2fo.xsl b/xdocs/style/stylesheets/xml2fo.xsl
index c05930d..6ead675 100644
--- a/xdocs/style/stylesheets/xml2fo.xsl
+++ b/xdocs/style/stylesheets/xml2fo.xsl
@@ -1,5 +1,23 @@
 <?xml version="1.0"?>
 
+  <!--
+   * Licensed to the Apache Software Foundation (ASF) under one
+   * or more contributor license agreements. See the NOTICE file
+   * distributed with this work for additional information
+   * regarding copyright ownership. The ASF licenses this file
+   * to you under the Apache License, Version 2.0 (the  "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *     http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+  -->
+
 <!--    XSLT stylesheet to convert the Xalan documentation collected in one xml file into a fo file
         for use in FOP