For nearly half a century none of the tracts of the Association were published for free distribution. They were issued at prices ranging from two to ten cents each, according to the size, some of them having not more than ten or twelve pages, while others had more than a hundred. So long as there was an eagerness for theological reading, and an earnest intellectual interest in the questions which divided the several religious bodies of the country from each other, it was not difficult to sell editions of from 3,000 to 10,000 copies of all the tracts published by the Association. From the first, however, there were many calls for tracts for free distribution. To meet this demand, there was formed in Boston, by a number of young men during the year 1827, The Unitarian Book and Pamphlet Society, for "the gratuitous distribution of Unitarian publications of an approved character." It undertook especially to distribute "such publications as shall be issued by the American Unitarian Association or recommended by it." This society also circulated tracts printed by The Christian Register and The Christian World, the call for such publications having led the publishers of these periodicals to give their aid in meeting the demand for pamphlets on theological problems and on practical religious duties. The society also distributed Bibles to the poor of the city and in more distant country places, furnishing them to missionaries and others who would undertake work of this kind. In the same manner they gave away large numbers of books, their list for 1836 including Scougal's Life of God in the Soul of Man, Ware's Formation of the Christian Character, and works by Worcester, Channing Whitman, and Greenwood. The call for aid was considerable from the western and southern states; and books were sent to Havana, New Brunswick, and the Sandwich Islands. In the winter of 1840-41 this society was reorganized, an urgent appeal was made to the churches for an increase of funds, and during the next few years its work was large and important. In the year 1848 was begun a special effort for the circulation of Unitarian books, on the part of The Book and Pamphlet Society, The Society for Promoting Christian Knowledge, Piety, and Charity, as well as by the Unitarian Association. In that year the second of these organizations sent out circulars to 263 colleges and theological schools, offering to give Unitarian books, to those desiring to receive them; and to 59 of these institutions assortments of books worth from two dollars to one hundred dollars were forwarded. The first request came from the Catholic College at Worcester, and the last from the Wisconsin University at Madison. At the same time the Association was pressing the sale and free distribution of the Works and the Memoir of Dr. Charming, as well as various books by Peabody, Livermore, Bartol, and others.