It's me!
http://en.wikipedia.org/wiki/Daniel_McCallum
My favorite part: "McCallum developed the McCallum inflexible arched truss, used in wooden railroad bridges across the US and Canada in the 19th century. The advent of steel bridges effectively made obsolete his unique design."
My favorite part: "McCallum developed the McCallum inflexible arched truss, used in wooden railroad bridges across the US and Canada in the 19th century. The advent of steel bridges effectively made obsolete his unique design."