I know that the G-38 class was in number series 15000 - 15999. I know that the G-39 class was in number series 13000 - 13999. Both Stewart, and MDC have put out cars in the 14000 - 14999 number series. None of my books refer to that numeric series as legitimate. Can anyone tell me if the 14000 - 14999 series was used for ore jennies, what class of gons carried that numeric series, and what reference do you have that I can check?