GUEST: Well, they belonged to my wife's great-aunt. Her father-in-law had commissioned Frank Lloyd Wright to build this house in Nebraska in the early 1900s. That was a story she'd always told us.

APPRAISER: This is so special and it's so exciting. Frank Lloyd Wright blueprints don't come up on the market very often. They're very early, 1902, 1903. We don't see a lot of blueprints from that time. Although he had been designing and building several dozen houses by then, most of the projects that he had done had been in Wisconsin and Illinois, close to home. It's a fairly simple house. This is not very large. We have the dimensions. There's one bathroom upstairs, four bedrooms. It is so fun to see a Prairie School house at the very beginning of his career when he is working with the prairie ideal, the organic naturalism of what he was doing with architecture, mixing it with Arts and Crafts. The three that we've selected here I thought would give us the best idea of what it is that you have. At auction, probably somewhere between $1,500 and $3,000.

GUEST: Mmm. I'm surprised. I had no idea. Thank you.