Johnston’s career, however, did not end in 1910. By then she was internationally recognized as one of American’s leading documentary, portrait, and artistic photographers. She began to specialize in garden photography and concluded her long career as an architectural photographer in the 1930s. Throughout some fifty years as a working photographer, she continually set her own standards and followed her own intuition. In 1900 a critic summed up Johnston’s individuality, noting that her photography “is of no particular school or class. She follows no traditions and no rules.”