While in Italy, Shelley became concerned about the progress of publishing "Prometheus Unbound". He wrote many letters to Charles Ollier from March until April asking about the drama's progress and wanted to know if the text was accurate because he was unable to check the proofs himself. Both Percy and Mary Shelley were eager to hear when the book was published, and inquired Gisborne's wife, Thomas Medwin, and John Keats about its release throughout July 1820. It was not until late August that they received word that the book was published. They were eager to read the published version and obtained one by November 1820.