White Rock freight house interior?

[Svein]

A while back Vigdis bought the White Rock freight house from Monroe Models, but has only recently started building the kit. She wants a detailed interior, but the kit came with no flooring at all, or any suggestions on how the interior should be. The trackside doors are situated a little higher than the ones on the opposite side, indicating two different floor levels inside the building. Does anyone here know how this was done? Was there a small elevated deck just inside the loading doors, with a ramp or stairs down to the main floor level, or was it some other solution? What about shelves or storage racks inside the building, were there any of those or was the building pretty much just a big empty space? Any info here would be great, prototype pics from a similar freight house would be even better .

Thanks,
Svein