I've been working with the Railroad Yard Shed P/N S42. This wooden shed seemed to be a good candidate for a woodyard office. Thanks to suggestions from Clever Bros discussion page, I've completed (almost) a reasonable model. If you want, check it out:
http://blacktop-crossing.blogspot.com/2012/03/making-woodyard-shed-from-wood-yard.html

Looks good Mack. be sure to send pix of the finished yard.
Thom

Really nice job Mack. I especially like the way the frosted windows look. I've built that oil tank in HO, good work.