It is one of the earliest steel-framed buildings in Iowa.

This was one of Britain's first large steel-framed building (81 m x 66m).

The station is an early example of a steel-framed building with a stone-clad brick cover.

It was destroyed by fire in 1923, and a steel-framed concrete building replaced it.

The limit on height was broken in the last hundred years by the steel-framed building and the elevator.

(Typical floor heights in steel-framed buildings are 12 to 13 feet.)

It remains as the tallest steel-framed building in the country.

It is a steel-framed building, clad with Portland stone.

A new 'steel-framed building' was also added in 1940-41.

The steel-framed building has two stories plus basement and attic floors, with a mansard roof.