The first of the veneer plaster went up in Henry's bedroom. Unlike the more common taped drywall, veneer plaster covers the entire wall surface.
Here, the plaster is going up in the master bedroom.
The opening between the dining room and the kitchen will have an arch detail like the one between the living room and dining room. We can't say for sure, but suspect that there was originally an arch here before the 1950s remodel.