Leland & Falconer foundry & machining, predecessor to Cadillac, started by building power boat motors in early 1890s. Folded into Cadillac sometime in 1st decade of 20th century. Detroit, 1903 ~
The electric on the right appears to be a Milburn. If so it would be near the end of the companies existence. 1915 thru about 1923 I believe.