Among the papers, bought for approximately $30,000, is a large watercolor rendering of the exterior of Air Force One in which John F. Kennedy flew.

Three giant watercolor renderings showed concepts for future streetscapes, including a long fountain in front of the exchange like those outside the Metropolitan Museum of Art.

Contemporary architects use hand-drawn sketches, pen and ink drawings, and watercolor renderings to represent their design with the vision of an artist.

Her beautiful watercolor renderings of buildings and landscapes became known as a staple of Wright's style, though she was never given credit by the famous architect.

They were joined by Perkins apprentice, Marion Mahony, who in 1895 transferred to Wright's team of drafters and took over production of his presentation drawings and watercolor renderings.

The Nebraska Historical Society holds a collection of his architectural drawings, including both line drawings and watercolor renderings.

Working from a small watercolor rendering, Mr. Leap makes a full-size charcoal drawing called a cartoon, which is used to determine where the lead lines will be placed.

It includes designs, photographs and watercolor renderings of his gardens, and architectural details and furniture from the gardens.

The drawings range from glorious schematics of the arched masonry High Bridge over the Harlem River to precise watercolor renderings instructing stone-cutters on working with gneiss.

"Humphry Repton, Landscape Designer, 1752-1818," an exhibition of digital reproductions of Repton's watercolor renderings of garden designs, continues at the school through Jan. 30.