U. S. Embassy Office Building, Helsinki, Finland, 1975 (unbuilt project)

[Conceptual Sketch of Site Plan], untitled. Green and black ink sketch on tracing paper, 18x27 inches [from photographic copy by Lance Burgharrdt]

U. S. Embassy Office Building, Helsinki, Finland, 1975 (unbuilt project)

[Roof Study], untitled. Ink and blue pencil sketches on tracing paper, 15 1/2 x 18 inches [from photographic copy by Lance Burgharrdt]

U. S. Embassy Office Building, Helsinki, Finland, 1975 (unbuilt project)

[Roof Study], untitled. Ink sketches on tracing paper, 17x18 inches [from photographic copy by Lance Burgharrdt]

U. S. Embassy Office Building, Helsinki, Finland, 1975 (unbuilt project)

Embassy Window [Studies] (#49). Blue ink sketches on notebook paper, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

U. S. Embassy Office Building, Helsinki, Finland, 1975 (unbuilt project)

Embassy Window Studies. Blue ink sketches on notebook paper, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

University of Iowa College of Law Building, Iowa City, Iowa, 1979-1986

[Early Conceptual Sketch], untitled. Blue ink sketches on steno pad paper, 6x9 inches [from photographic copy by Lance Burgharrdt]

University of Iowa College of Law Building, Iowa City, Iowa, 1979-1986

[Early Conceptual Sketch], untitled. Brown and black ink sketches on shirt cardboard, 8x14 inches [from photographic copy by Lance Burgharrdt]

University of Turin, Humanities Faculties Building, Turin, Italy, 1989-1990 (unbuilt project)

[Site Plan Study], untitled. Blue ink sketch on tracing paper with green, brown and purple marker coloring, 12 x 30 1/2 inches [from photographic copy by Lance Burgharrdt]

University of Turin, Humanities Faculties Building, Turin, Italy, 1989-1990 (unbuilt project)

[Site Plan Study], untitled. Ink sketch on tracing paper with gray and yellow marker coloring, 17 1/2 x 18 inches [from photographic copy by Lance Burgharrdt]

University of Turin, Humanities Faculties Building, Turin, Italy, 1989-1990 (unbuilt project)

[Site Plan Study], untitled. Ink sketch on tracing paper with green marker coloring, initialed, 18x35 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]

General Service Building for the University of Michigan, Ann Arbor, Michigan

Photographic print of architectural rendering. Harley, Ellington & Day, architects

University of Michigan Sports Services Building, Ann Arbor, Michigan, 1985-1990

[Early Roof Studies], untitled. Black and blue ink sketches on two sheets of tracing paper with blue and orange marker coloring, 18x28 inches. Second sketch is digital image only