The prototype of the car was built by the Ortner Freight Car Company for the Mac Millan-Bloedel Incorporated from 12/1973-4/1974 (Series 71001-71010) Then later on the Southern Railway acquired 9 of the cars from Mac Millan-Bloedel Incorporated in 7/1986 (Series 118001-118009) This HO 1:87 Ortner 65' FS-139 Skeleton Pulpwood Log Car STL files comes the body and coupler box covers. The only thing you need to complete this model is some 100-Ton rolling bearing trucks with 33' metal wheels and metal couplers of your choice. Also you need 2-56 x 1/4 phillips pan head screws for the trucks and 2-56 x 1/8 phillips pan head screws coupler boxes. Note these STL files is for personal use only and not to be commercially reproduced!!!