Micro-Trains made them. FEATHER RIVER TRAINS website shows three in stock as Micro-Trains PN 499-43-911 and I'm sure some other dealers may have them as well.
I recieved the pulp loads over the weekend.They have not been weathered/highlighted or painted like the one I got with the micre-trains freight car.I tried to stain them but stain does nothing.Does anyone have thouhts on preping them or detailing them similar to the one that came with the car