These old lawnmowers were part of a display belonging to a local chrome-plating service.
In case you can't read the signs, they are, from left to right:

• 1945 Maytag (Yes, the "dependability people".)
• 1949 Rumsey
• 1931 Pioneer electric mower (Is this the same Pioneer that makes car stereos?)

Anyway, hope you like them!

Photographed at the 2019 Houston Autorama