The subseries photographs/slides are divided further into Family Portraits and Photographs, Miscellaneous. The miscellaneous photographs are mostly unidentified snapshots. Major subjects present include: Altrusa meetings; Pettersen's barn/studio and pets; Pettersen's travels to visit friends; parties/gatherings; house models; Taliesin West Half Century celebration; and a visit to Frank Lloyd Wright's Grand Waikapu Country Club in Maui, Hawaii.

Pettersen served as an apprentice to Frank Lloyd Wright as part of the Taliesin Fellowship from 1941 to 1943. Over the years, she collected material, such as newspaper and magazine clippings, newsletters (Frank Lloyd Wright Building Conservancy and FLLW Update), documenting Frank Lloyd Wright, his buildings, and his legacy. She also collected material, such as correspondence, publications, and clippings relating to Taliesin Fellows.