These are typed listings of railroad-related slides made from Dubin's own collections and from other sources presumably, but not inter-filed with the two main orders, I (topic) and II (railroad companies), and listed elsewhere. Listing D was updated…
This is an advertisement page from a railroad trade periodical, mostly, or a broadside for the Cincinnati, Hamilton & Ohio R.R., from the 1890s. For more explanation see: http://archon.lakeforest.edu/?p=collections/controlcard&id=125 .
The…