| Visiting Artist Lectures |
| 2006 | "Intimate Enemies: Portraits from the Rwandan Genocide", Exberliner - Mondays at Muenz, Berlin |
| 2002 | "Photography, Memory and Human Rights", Bard College, Annandale on Hudson, NY |
| "Daguerreotype to Digital", Evergreen State College, Olympia, WA | |
| "Another Africa", Manchester Craftsmen Guild, Pittsburgh, PA | |
| 1999 | "Another Africa", The Nelson-Atkins Museum of Art Kansas City, MS |
| 1998 | Book Release, Museum of African Art, New York City, NY |
| "Another Africa", Seattle Art Museum (Sponsors- African Arts Council and Photography Council,) Seattle, WA | |
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"Visions of Africa", Seattle Arts and Lectures Series, Joint lecture with writer Chinua Achebe,Seattle, WA (Included slides, readings and discussion concerning current issues and perceptions of Africa) |
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| "Visions of Africa", Portland Arts and Lecture Series, (Joint lecture with writer Chinua Achebe,) Portland, OR | |
| 1993 | The Art of Microsoft, “Artist Encounters,” Henry Art Gallery, University of Washington, Seattle, WA |
| 1992 | "Egyptian Time", International Center of Photography / Midtown, New York, NY |
| Book signing, Egyptian Time, The Elliott Bay Book Company, Seattle, WA | |
| 1989 | "Care and Collecting", Seattle Art Museum Photography Council, Seattle, WA (An overview on the selection and treatment of works of art on paper) |
| 1983 | "In the Age of Information: Photography", Seattle Art Museum Photography Council, Seattle, WA |
| 1986 |
"Trends in Photographic Conservation", Smith College, Museum Studies Class. Northampton, MA |
| 1994 | Workshop: "Vintage Media Photography for Museum Conservators". (Practicum techniques of 19th and 20th century photographic printing process, including collodian emulsion, calotypes, salted paper prints.) Solio Foundation, Florence, MA |
| 1982 | "Preservation of Photographic Materials for Photographers and Collectors", Massachusetts College of Arts, Boston, MA |
| "Photography:
Preservation and Restoration of Black and White Materials", Photographic Resources Center, Boston University, Boston, MA |
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| 1982 | "Regionalism in Photography: Past to Present", Museum of Fine Arts, Springfield, MA |
| "Photographic Surveys: Current Trends", Pratt Institute, Brooklyn, NY | |
| "Color Photography: Aesthetics and Process", Massachusetts College of Art, Boston, MA | |
| 1980-1981 | Workshop: "Preservation and Restoration of Photographic Materials". University Film Services Center, Cambridge, MA |
| 1979 | Workshop:
"An Introduction to History, Aesthetics, and Technical Aspects of Color", University Film Services Center, Cambridge, MA |
| 1979 | Photography:
"Preservation and Restoration of Black and White Materials", Photographic Resources Center, Boston University, Boston, MA |