diff --git a/Source/Collections/Deque.Insertion.cs b/Source/Collections/Deque.Insertion.cs
index 7d9b99e..ed50529 100644
--- a/Source/Collections/Deque.Insertion.cs
+++ b/Source/Collections/Deque.Insertion.cs
@@ -1,4 +1,24 @@
-using System;
+#region CPL License
+/*
+Nuclex Framework
+Copyright (C) 2002-2009 Nuclex Development Labs
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the IBM Common Public License as
+published by the IBM Corporation; either version 1.0 of the
+License, or (at your option) any later version.
+
+This library 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
+IBM Common Public License for more details.
+
+You should have received a copy of the IBM Common Public
+License along with this library
+*/
+#endregion
+
+using System;
 using System.Collections.Generic;
 using System.Collections;
 
diff --git a/Source/Collections/Deque.Interfaces.cs b/Source/Collections/Deque.Interfaces.cs
index 3d7c5bc..d4ad4ac 100644
--- a/Source/Collections/Deque.Interfaces.cs
+++ b/Source/Collections/Deque.Interfaces.cs
@@ -1,4 +1,24 @@
-using System;
+#region CPL License
+/*
+Nuclex Framework
+Copyright (C) 2002-2009 Nuclex Development Labs
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the IBM Common Public License as
+published by the IBM Corporation; either version 1.0 of the
+License, or (at your option) any later version.
+
+This library 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
+IBM Common Public License for more details.
+
+You should have received a copy of the IBM Common Public
+License along with this library
+*/
+#endregion
+
+using System;
 using System.Collections.Generic;
 using System.Collections;
 
diff --git a/Source/Collections/Deque.Removal.cs b/Source/Collections/Deque.Removal.cs
index 0aacb8f..72b53c2 100644
--- a/Source/Collections/Deque.Removal.cs
+++ b/Source/Collections/Deque.Removal.cs
@@ -1,4 +1,24 @@
-using System;
+#region CPL License
+/*
+Nuclex Framework
+Copyright (C) 2002-2009 Nuclex Development Labs
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the IBM Common Public License as
+published by the IBM Corporation; either version 1.0 of the
+License, or (at your option) any later version.
+
+This library 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
+IBM Common Public License for more details.
+
+You should have received a copy of the IBM Common Public
+License along with this library
+*/
+#endregion
+
+using System;
 using System.Collections.Generic;
 using System.Collections;
 
diff --git a/Source/Collections/Deque.Search.cs b/Source/Collections/Deque.Search.cs
index 011d3d6..50a3888 100644
--- a/Source/Collections/Deque.Search.cs
+++ b/Source/Collections/Deque.Search.cs
@@ -1,4 +1,24 @@
-using System;
+#region CPL License
+/*
+Nuclex Framework
+Copyright (C) 2002-2009 Nuclex Development Labs
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the IBM Common Public License as
+published by the IBM Corporation; either version 1.0 of the
+License, or (at your option) any later version.
+
+This library 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
+IBM Common Public License for more details.
+
+You should have received a copy of the IBM Common Public
+License along with this library
+*/
+#endregion
+
+using System;
 using System.Collections.Generic;
 using System.Collections;
 
diff --git a/Source/Collections/Deque.cs b/Source/Collections/Deque.cs
index f0c7a50..24a35cb 100644
--- a/Source/Collections/Deque.cs
+++ b/Source/Collections/Deque.cs
@@ -1,4 +1,24 @@
-using System;
+#region CPL License
+/*
+Nuclex Framework
+Copyright (C) 2002-2009 Nuclex Development Labs
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the IBM Common Public License as
+published by the IBM Corporation; either version 1.0 of the
+License, or (at your option) any later version.
+
+This library 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
+IBM Common Public License for more details.
+
+You should have received a copy of the IBM Common Public
+License along with this library
+*/
+#endregion
+
+using System;
 using System.Collections.Generic;
 using System.Collections;