But he and others believe they have yet to prove some earlier pieces are the work of anyone else.

The earliest pieces, from the 15th through the 17th century, are not signed.

Indeed, many early pieces had little more than an oil finish.

Other collectors soon saw the value in early American pieces.

The earliest pieces in the collection were made over 10,000 years ago.

The earliest dated piece of his writing comes from 1795.

Is that an early piece of business, do you think?

It is the earliest piece of narrative art in the country.

Looking over photographs of her early pieces, she talked about them as if they were old friends.

The earlier pieces focused on movement problems that were clear to the audience.