Gregory XV, P., & Butter, N. (1623). The Pope's letter to the Prince in Latine, Spanish, and English done according to the Latine and Spanish coppies printed at Madrid. A Jesuites oration to the Prince, in Latine and English. Printed for Nathaniell Butter.

Gregory XV, Pope, and Nathaniel Butter. The Pope's Letter to the Prince in Latine, Spanish, and English Done According to the Latine and Spanish Coppies Printed at Madrid. A Jesuites Oration to the Prince, in Latine and English. London: Printed for Nathaniell Butter, 1623.

Gregory XV, Pope, and Nathaniel Butter. The Pope's Letter to the Prince in Latine, Spanish, and English Done According to the Latine and Spanish Coppies Printed at Madrid. A Jesuites Oration to the Prince, in Latine and English. Printed for Nathaniell Butter, 1623.