Kemper Museum of Contemporary Art & Design, Kansas City Art Institute, Kansas City, Missouri, 1991-1994

[Early Conceptual Sketches], untitled. Ink sketches on reverse of "La Valencia Hotel" memo pad paper, 3 1/2 x 6 1/2 inches [from photographic copy by Lance Burgharrdt]

Kemper Museum of Contemporary Art & Design, Kansas City Art Institute, Kansas City, Missouri, 1991-1994

[Early Conceptual Sketches], untitled. Ink sketches on steno pad paper, initialed, 6x9 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]

Cornell University Uris Library Addition, Ithaca, New York, 1980-1982

[Conceptual Sketch of Early Site Plan], untitled. Green ink sketch on tracing paper, 12x23 inches [from photographic copy by Lance Burgharrdt]

Cornell University Uris Library Addition, Ithaca, New York, 1980-1982

[Early Conceptual Sketch], untitled. Blue ink sketch on tracing paper, 12x18 inches [from photographic copy by Lance Burgharrdt]

Woodbranch Energy Plaza, Houston, Texas, 1982 (unbuilt project)

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

Woodbranch Energy Plaza, Houston, Texas, 1982 (unbuilt project)

[Early Conceptual Sketch], untitled. Brown ink sketch on shirt cardboard, 8 x 12 1/2 inches [from photographic copy by Lance Burgharrdt]

Kaufman Residence, Muskegon, Michigan, 1962 (unbuilt project)

[Early Conceptual Sketch], untitled. Blue ink sketch on yellow loose-leaf paper, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

Bald Mountain Recreational Facility, Pontiac, Michigan, 1964-1969

[Early Conceptual Sketches], untitled. Ink sketches on two sides of shirt cardboard, 8x12 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]

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

Ohio State University College of Law Building Addition, Columbus, Ohio 1988-1993

[Early Conceptual Sketch], untitled. Digital image only of black ink sketch on graph paper, initialed

Ohio State University College of Law Building Addition, Columbus, Ohio 1988-1993

[Early Conceptual Sketch], untitled. Digital image only of black ink sketch on graph paper, initialed

National Library of Latvia, Riga 1989-in progress

[Early Conceptual Sketch], untitled. Digital image only of blue ink sketch on tracing paper, initialed