Mary Elizabeth Jane Colter was an American architect and designer. She was one of the very few female American architects in her day. She was the designer of many landmark buildings and spaces for the Fred Harvey Company and the Santa Fe Railroad, notably in Grand Canyon National Park. Her work had enormous influence as she helped to create a style, blending Spanish Colonial Revival and Mission Revival architecture with Native American motifs and Rustic elements, that became popular throughout the Southwest. Colter was a perfectionist, who spent a lifetime advocating and defending her aesthetic vision in a largely male-dominated field.