vtkmdiview file

Hi everyone!
I am working on a project that has a files named as vtkMDIView.h and vtkMDIView.cpp. In file desciption, it is written :
Program: Visualization Toolkit
Module: RCSfile: vtkMDIView.cpp,v
Language: C++
Date: Date: 2003/02/06 18:20:11
Version: Revision: 1.2

Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

It looks like these files were part of vtk package but I can't find its upgraded version. Can please anyone guide me about this issue?