 On April 25 , 1988 , at the age of 52 , Solanas died of pneumonia at the Bristol Hotel in the Tenderloin district of San Francisco . A building superintendent at the hotel , not on duty that night , had a vague memory of Solanas : " Once , he had to enter her room , and he saw her typing at her desk . There was a pile of typewritten pages beside her . What she was writing and what happened to the manuscript remain a mystery . " Her mother burned all her belongings posthumously . 
