The Glorious progress of the Gospel amongst the Indians in New England : manifested by three letters under the hand of that famous instrument of the Lord, Mr. John Eliot, and another from Mr. Thomas Mayhew, Jun., both preachers of the word, as well to the English as Indians in New England ... : together with an appendix to the foregoing letters, holding forth conjectures, observations, and applications, by I.D. ... /