La región más transparente appeared in the stores of Mexico City on Monday, April 7, 1958. The previous day Elena Poniatowska had published a lengthy interview with Fuentes in the Sunday cultural supplement of the newspaper Novedades. Apparently, she had read a pre-publication copy of the novel. Emmanuel Carballo writing eleven years later states that the book was published on the 29th of March. Most likely he was consulting the printing information on the last page of the novel. These are always estimates and may vary by several weeks or more. The date given by Poniatowska at the time of the event seems much more likely. Numerous reviews were printed in various Mexico City newspapers during the months of April, May, and June. Opinions vary on how quickly the novel sold out; some reports say a week, others suggest several months. A second printing is...