One of this author's protagonists reads about a colleague giving mouth-to-m
One of this author's protagonists reads about a colleague giving mouth-to-mouth resuscitation to a monkey with tuberculosis. That character later sneaks out of the house of a woman he saved from being stabbed by her husband Erikson, and receives a letter from Geraldine Portnoy describing his daughter being locked in a car. Another of this author's characters burst into uncontrollable tears during the funeral of a stranger after being refused help by his father Dr. Adler. This author wrote a short novel about a character who is conned into a scheme to invest in lard by Dr. Tamkin. Another of his protagonists mulls over his divorce from Madeleine and his betrayal by Valentine Gerbasch, while writing letters he never sends to various celebrities. For 10 points, name this American novelist of Seize the Day and Herzog. 
One of this author's protagonists reads about a colleague giving mouth-to-mouth resuscitation to a monkey with tuberculosis.
Saul Bellow