1921 - Resumes commercial portrait business. Photographs Adolph Bohm Ballet Intime. Creates first sharp-focus nature studies at Point Lobos and begins to photograph plant forms.
1922 - Joins the Pictorial Photographers of America.
1923 - Photographs light abstractions and begins series of magnolia studies.
1923 Imogen made her first double exposure photograph, a portrait of her mother with a crown a silver spoons.
1927 - Creates the negative image Snake.
1927 - Included in the Pictorial Photographic Society Exhibition at the California Palace of the Legion of Honor, San Francisco, California.
1929 - Ten of her photographs were exhibited in the prestigious Film und Foto Exhibition in Stuttgart, Germany. She had a local exhibition at the Berkeley Art Museum.