The Edge of Time presents a retrospective of Yampolsky's photographic work since 1960. Reflecting her lifelong concerns, the images capture rural Mexico and its people with respect and infinite care. They function as works of art and as documents of a moment in Mexico's history when lifeways that have endured for centuries face the onslaught of modernization. Elena Poniatowska has been Yampolsky's friend for many years and, in the foreword, which also includes many quotes from the photographer herself, Poniatowska describes her method of working. Sandra Berler provides an overview of Yampolsky's life and the range of her work. Francisco Reyes Palma concludes the text with an exploration of Yampolsky's photographic aesthetic.