Thanks Brad - I haven't seen those top two before. The blocks appear to be 33 to 36 models.
The bottom shot of Henry is the first 32 flathead as indicated by the one bbl carb, the long necks on the head mounted waterpumps and other misc details not shown in the pic. the 32 engines had no provision for block ventilation - oil leaks were a major problem as blowby had nowhere to go except past gaskets.