These are sets of digital photos that treat a particular C&O subject, which could be geographical area a structure type, locomotives, car, or facility. So far we have produced several in the large 11x17 size. These give an excellent appreciation of the subject being covered through large, detailed photos. The newest series are 8 1/2 X 11 in size. These consist of equipment by type, such as box cars or flat cars, or steel cabooses, and so on, of a particular series or class. Some consist mainly of builder photos, with a few in-service photos added in, and a diagram. Others have more of a mix of in service photos. Both sizes have from 19-to-25 images per album. The available albums, which are produce by high-quality digital copiers and are staple bound with card-stock covers for durability.