This past Saturday 10 March 2018 the JRD was treated to two excellent clinics on operations. The first by Chris Artale on operating without car cards in N Scale which is still applicable to other scales. Chris opened up his house in the afternoon to see his layout in operation. The second clinic was by Andrew Dodge on operations on his O Scale (Proto 48) Colorado Midland. Andrew gave a frank discussion on compromises necessary for operation along with how historical research changes what modelers have as preconceived notions of their railroads operations.