One of the cards used for reference in the Public Library contains the following: "The Prince Library has some rare specimens of the earliest typographical art in British America, and other books of peculiar interest in the history of New England, though not printed in America. The Bay Psalm Book, which was printed at Cambridge, Mass., in 1640, being the first book ever printed in the British Possessions, 'The Freeman's Oath' and a small almanac only preceding it. What is supposed to be the original draught of the preface of this book, in the handwriting of one of the editors, the Rev. Richard Mather, is among the Prince MSS. Elliot's Indian Bible,--first edition printed at Cambridge, 1663,--also Eliot's Indian Primer, 1720, in original binding, and thought in that style to be unique. Capt. John Smith's description of New England, printed in London, 1616, with the early map. This copy contains the old and new names, and has differences from most copies that have been preserved." Mr. Prince collected the original manuscripts of the "Mather Papers," and arranged them chronologically with notes. He seemed to know intuitively that everything should be preserved that would be of the least advantage to future historians. The salvation of the records of this most important family, who, with extreme rigor and cruelty even, in some cases, ruled the Puritans of their day, was a natural and thoughtful act on Mr. Prince's part. The "Hinckley Papers" are of great interest also. The catalogue of this portion of the library has been very carefully prepared, as each letter in all these manuscript collections is designated by subject, the name of the writer, date, and volume that contains it. The Hinckley papers were those belonging to Mr. Prince's maternal grandfather, Gov. Hinckley, who had a very extensive correspondence during the twenty years he was governor of Plymouth Colony. It contains letters from all men of note of that period,--Roger Williams, the Cottons, the Mathers, Gov. Winslow, a letter of King Charles II. to Gov. Josiah Winslow, Gov. Hinckley's address, and petition to James II.; also many personal letters to wife and daughters. Mr. Prince says "that on his grandfather's death he took these papers from his study, but while he was in Europe some of curiosity and value were unhappily lost." There are some Prince papers, mostly letters of distinguished divines to his brother, Rev. Nathan Prince. In his brother's commonplace book he inscribes, "This book belongs to the New England Library. Begun to be collected by Thomas Prince upon his entering Harvard College in 1703, and was given by Prince to s'd library in memory of his late dear brother, y^e Rev. Nathan Prince, M.A., formerly Fellow and Tutor of Harvard College. Born at Sandwich, November, 1698; died at Rattan, 1748, and wrote this manuscript before he left s^d college in 1742." The catalogue remarks: "Two vols. MSS., evidently companions to this book,