The third photo (with the engine hanging) is an Evinrude Rowboat engine.
That particular one appears to be a 1913 vintage as I see no magneto ignition on it. That one ran off of an external battery ignition such as a Model T coil and battery system.
They were extremely good running engines and turned a whopping 2hp at 800RPM!
They turned a 12" pitch propeller at a 1:1 gear ratio and ran a 16:1 fuel/oil ratio. Even with that ratio they really didn't smoke that much.
I have one (1913) and will be running it, in original condition, at this coming year's Tavares Boat show. Whoever would like a ride in history is more than welcome!
I just bought the engine about 10 days ago in Tomahawk, Wisconsin from the second owner of the engine. We had the engine running in less than one hour! A second Rowboat engine came up for sale as well. A 1918 version, restored, with a reversing capability. That one is now in Florida as well !
These engines are affectionately called "Knucklebusters" for obvious reasons.....
Couple photos of the 1918.......

