Previous Next Photo By Jim Appleman CR 4021 E8A is the power for this OCS coming off the west end of Rockville Bridge heading into Enola Yard. OCS consist of 6 cars included CR 55 Budd dome car. Year 1988 Original Date 7/12/88 Location Marysville PA Equipment Type EMD E9 Conrail Number 4021 Additional Galleries Jim Appleman's Conrail Photography Subject(s) The Conrail Office Car Special (OCS) OCS Locomotives OCS Passenger Equipment Collection CRHS Conrail Photo Archive Contributions