A striking oil on canvas portrait rendered in Guayasamín's signature expressionist style, characterized by bold, emotive brushwork and a powerful sense of psychological depth. The figure of Mary Waller is depicted with the artist's distinctive elongated forms and intense, soulful eyes that convey both vulnerability and inner strength. Rich, earthy tones and fluid contours reflect Guayasamín's deeply humanist vision, rooting the portrait in the emotional and cultural sensibility that defines his celebrated body of work.