diff --git a/Source/NSEnumerator.m b/Source/NSEnumerator.m
new file mode 100644
index 000000000..c4664c6a5
--- /dev/null
+++ b/Source/NSEnumerator.m
@@ -0,0 +1,35 @@
+/* NSEnumerator abstrace class for GNUStep
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by:  R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
+   Date: March 1995
+
+   This file is part of the GNU Objective C Class Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 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 GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <objects/stdobjects.h>
+#include <foundation/NSUtilities.h>
+
+@implementation NSEnumerator
+
+- (id) nextObject
+{
+  [self notImplemented:_cmd];
+  return nil;
+}
+
+@end
diff --git a/Source/objects/NSArray.h b/Source/objects/NSArray.h
new file mode 100644
index 000000000..5d22da880
--- /dev/null
+++ b/Source/objects/NSArray.h
@@ -0,0 +1,49 @@
+/* GNU extensions to NSArray.
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by:  R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
+   Date: March 1995
+
+   This file is part of the GNU Objective C Class Library.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 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 GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* You can include this instead of (or in addition to)
+   foundation/NSString.h if you want to use the GNU extensions.  The
+   primary GNU extention is that NSString objects now conform to
+   IndexedCollecting---they are Collection objects just like in
+   Smalltalk. */
+
+#ifndef __objects_NSString_h_OBJECTS_INCLUDE
+#define __objects_NSString_h_OBJECTS_INCLUDE
+
+#include <objects/stdobjects.h>
+#include <objects/IndexedCollecting.h>
+#include <objects/String.h>
+
+/* Eventually we'll make a Contant version of this protocol. */
+@interface NSArray (GNU) <IndexedCollecting>
+@end
+
+@interface NSMutableArray (GNU)
++ (unsigned) defaultCapacity;
++ (unsigned) defaultGrowFactor;
+- setCapacity: (unsigned)newCapacity;
+- (unsigned) growFactor;
+- setGrowFactor: (unsigned)aNum;
+@end
+
+#endif /* __objects_NSString_h_OBJECTS_INCLUDE */