With his brother, he began restoring Calder sculptures and consulting for conservators, something they had been doing informally since they were teen-agers.

Another monumental Calder sculpture, "Untitled" (1963), nearly eight feet tall, was estimated at $800,000 to $1 million.

As an added lure, the city erected the convention center that now looms over downtown like a massive concrete Calder sculpture.

He is also involved in the Calder Foundation and works to restore Calder sculptures for exhibitions.

A Calder sculpture set another record.

The Calder sculpture was installed in the atrium of the Hart Building in 1986.

One drawing from this period, meant to illustrate the brain's auditory system, is as spare and geometric as a Calder sculpture, with fibers running between neural regions.

The small metal maquette, the first step in the production of a monumental sculpture, was already for Calder a sculpture in its own right.

With its swirls of metal, the chair looks a bit like a Calder sculpture and is estimated at $8,000 to $12,000.

Each room is unique and all contain interesting art; a Calder sculpture adorns the pool.