In The Unitarian Miscellany, as in all their utterances of this time, the Unitarians manifested much anxiety to maintain their position as the true expounders of primitive Christianity. They did not covet a place outside the larger fellowship of the Christian faith. A favorite method of vindicating their right to Christian recognition was by the publication of the works of liberal orthodox writers of previous generations. Such an attempt was made by Jared Sparks in his Collection of Essays and Tracts in Theology, with Biographical and Critical Notices, issued in Boston from 1823 to 1826. In the general preface to these six volumes, Mr. Sparks said that "the only undeviating rule of selection will be that every article chosen shall be marked with rational and liberal views of Christianity, and suited to inform the mind or improve the temper and practice," and that the series was "designed to promote the cause of sacred learning, of truth and charity, of religious freedom and rational piety." In the first volume were included Turretin's essay on the fundamentals of religious truth, a number of short essays by Firmin Abauzit, Francis Blackburne's discussion of the value of confessions of faith, and several essays by Bishop Hoadley. That these writings have now no significance, even to intelligent readers, does not detract from the value of their publication; for they had a living meaning and power. Other writers, drawn upon in the succeeding volumes were Isaac Newton, Jeremy Taylor, John Locke, Isaac Watts, William Penn, and Mrs. Barbauld. The catholicity of the editor was shown in the wide range of his authors, whose doctrinal connections covered the whole field of Christian theology. In the publication of The Unitarian Miscellany, Mr. Sparks had the business aid of the Baltimore Unitarian Book Society, formed November 19, 1820, which was organized to carry on this work, and to disseminate other liberal books and tracts. This society distributed Bibles, "and such other books as contain rational and consistent views of Christian doctrines, and are calculated to promote a correct faith, sincere piety, and a holy practice." In the year 1821 was formed the Unitarian Library and Tract Society of New York; and similar societies were started in Philadelphia and Charleston soon after, as well as in other cities. Some of these societies published books, tracts, and periodicals, all of them distributed Unitarian publications, and libraries were formed of liberal works. The most successful of these societies, which soon numbered a score or two, was that in Baltimore. This society extended its missionary operations with the printed page widely, sending tracts into every part of the country, the demand for them having become very large. Its periodical had an extended circulation, its cheapness, its popular character, and its outspoken attitude on doctrinal questions serving to make it the most successful of the liberal publications of the time.[19]