Closeup of a section of the rockface. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

View of a section of the rockface formations in the canyon with shadows. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup of a section of the rockface formations. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Section of the rockface along the river. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup section of the rockface. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup of a section of the rockface. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

View of sections of the rockface along the Colorado River. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Closeup of a section of the rockface formations. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Glen Canyon, rockface formations along the river from a cut section of a contact sheet. Film strip numbers 3 and 7. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."

Enlarged and cut 35mm contact sheet with film strip numbers 8, 9, and 10, depicting rockface formations and foliage along the Colorado River. Todd Webb printed most of O'Keeffe's contact sheets and photographic prints. This photograph is from the Glen Canyon album that Todd Webb gave to Georgia O'Keeffe "In memory of the great August 1961 trip down the Colorado River."