diff --git a/.gitignore b/.gitignore
index 113321d..5bbd4d0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -180,6 +180,7 @@
 include/oledb.h
 include/oleidl.h
 include/optary.h
+include/perhist.h
 include/propidl.h
 include/pstore.h
 include/qedit.h
diff --git a/include/Makefile.in b/include/Makefile.in
index f3dc4ff..9f70cba 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -60,6 +60,7 @@
 	oledb.idl \
 	oleidl.idl \
 	optary.idl \
+	perhist.idl \
 	propidl.idl \
 	pstore.idl \
 	qedit.idl \
diff --git a/include/perhist.idl b/include/perhist.idl
new file mode 100644
index 0000000..d8cc531
--- /dev/null
+++ b/include/perhist.idl
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2009 Alistair Leslie-Hughes
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+import "objidl.idl";
+import "oleidl.idl";
+
+[
+    object,
+    uuid(91A565C1-E38F-11d0-94BF-00A0C9055CBF),
+    pointer_default(unique)
+]
+interface IPersistHistory : IPersist
+{
+    typedef [unique] IPersistHistory *LPPERSISTHISTORY;
+
+    HRESULT LoadHistory([in] IStream *pStream, [in] IBindCtx *pbc);
+
+    HRESULT SaveHistory([in] IStream *pStream);
+
+    HRESULT SetPositionCookie([in] DWORD dwPositioncookie);
+
+    HRESULT GetPositionCookie([out] DWORD *pdwPositioncookie);
+}