Bruce Griffin asked:
"I say unknown covered hopper meaning unknown to me. Can anyone help identify the second car in the photo? It appears to be a covered hopper possibly made from a hopper with roof and hatches added."
Not much to go on in this photo, but looks like a Reading rebuilt open hopper, possibly Class LOc, LOd or LOe.
See also page 52 of the Morning Sun RDG Color Guide.
John W. Hall data sheets from the The Reading Modeler site: