The Invention Of The Hamburger

Were the inventors actually brothers Frank and Charles Menches, who placed a beef patty between two slices of bread at a county fair in Hamburg, New York, in 1885?  Or was it Oscar Weber Bilby, who first sandwiched a patty in a bun in 1891 in Tulsa, Oklahoma?  

Perhaps the idea belongs to all of them. No matter who originally came up with the sandwiched patty, the national love affair with the hamburger thrives to this day, with burgers being about as American as it gets.