A Letter [signed: Anonymus Londinensis, I.e. Thomas Lewis? Or Matthias Earberry?] to Dr. Calamy [in Reply to His "Letter to Archdeacon Echard"], Shewing that Mr. Archdeacon Echard Has Done the Part of a Faithful Historian, in Branding Mr. Edmund Calamy, the Doctor's Grandfather, as a Promoter of Rebellion, and an Incendiary, to Posterity