Chama Oil House interior Help

I need help. I am building an O Scale model of the Chama Oil House circa 1940. I have plenty of exterior information but am sorely lacking in the interior information. What I really need is any information particularly on the south or office end of the building. I have seen the information on Ghost Depot, which says there are two offices and two small storerooms on this end of the building. What I am looking for is any information on how the walls are layout out in this area. Any help either in text or if someone who has been in the office could send me a rough sketch it would be greatly appreciated. You can contact me offline if you want to send a file or pictures if you have any.
Thanks For Your Assistance in Advance
Jim Hensley