Ford Motor Company Visitor Reception Center, Dearborn, Michigan, 1971 (unbuilt project)

[Conceptual Sketch of Scheme 1], untitled. Ink sketch on white paper, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

State of Wisconsin Office Building, Green Bay, Wisconsin, 1981-1983

[Conceptual Sketches], untitled. Blue ink sketches on two pages of letter from William Schuman, Chairman, The MacDowell Colony, including Gunnar Birkerts' notation, "Dinner Tom Bu" [Buechner, Director of Corning Museum of Glass], 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

State of Wisconsin Office Building, Green Bay, Wisconsin, 1981-1983

[Conceptual Sketch], untitled. Blue ink sketch on shirt cardboard, 8x14 inches [from photographic copy by Lance Burgharrdt]

State of Wisconsin Office Building, Green Bay, Wisconsin, 1981-1983

[Conceptual Sketches], untitled. Blue ink sketches on tracing paper, 21 x 24 1/2 inches [from photographic copy by Lance Burgharrdt]

Washington Monument Visitor Center Competition, Washington, DC, 1972 (unbuilt project)

G.B. Worksheet, #43. Ink drawing on reverse of blue-line print, 14 1/4 x 18 3/4 inches [from photographic copy by Lance Burgharrdt]

Subterranean Urban Systems Study, Graham Foundation Grant, 1971-1974

[Conceptual Sketch], untitled. Ink sketch on spiral notebook paper, 8 1/4 x 10 3/4 inches [from photographic copy by Lance Burgharrdt]

Subterranean Urban Systems Study, Graham Foundation Grant, 1971-1974

[Conceptual Sketches], untitled. Ink sketches on spiral notebook paper, 8 1/4 x 10 3/4 inches [from photographic copy by Lance Burgharrdt]

Subterranean Urban Systems Study, Graham Foundation Grant, 1971-1974

[Conceptual Sketches], untitled. Ink sketches on spiral notebook paper, 8 1/4 x 10 3/4 inches [from photographic copy by Lance Burgharrdt]

Tougaloo College Master Plan, Tougaloo, Mississippi, 1965-1971 (unbuilt project)

[Study Sketch], untitled. Brown ink drawing on tracing paper, 18 x 17 1/2 inches [from photographic copy by Lance Burgharrdt]

Tougaloo College Master Plan, Tougaloo, Mississippi, 1965-1971 (unbuilt project)

[Conceptual Sketch], untitled. Ink and purple crayon sketch on tracing paper, 17 3/4 x 21 inches [from photographic copy by Lance Burgharrdt]

Tougaloo College Master Plan, Tougaloo, Mississippi, 1965-1971 (unbuilt project)

[Conceptual Sketch], untitled. Ink sketch on yellow paper, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

Tougaloo College Master Plan, Tougaloo, Mississippi, 1965-1971 (unbuilt project)

[Conceptual Sketch], untitled. Ink sketch on shirt cardboard, 7 3/4 x 9 3/4 inches [from photographic copy by Lance Burgharrdt]

Tougaloo College Master Plan, Tougaloo, Mississippi, 1965-1971 (unbuilt project)

[Early Conceptual Sketches], untitled. Ink sketches on five sheets of tracing paper, 5 1/4 x 6 to 8 1/2 x 9 1/2 inches [from photographic copy by Lance Burgharrdt]

Resort Development, 1988 (unbuilt project)

[Conceptual Sketch of Site Plan], untitled. Ink sketch on graph paper with marker coloring, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

Resort Development, 1988 (unbuilt project)

[Conceptual Sketch of Site Plan] with 30 Cabins. Ink sketch on graph paper, with marker coloring, initialed, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]