The manuscripts which I could consult on South America are but few. Those on North America are more numerous and very important; particularly the traditions of the Linapis, Shawanis, &c., they are chiefly on wood, bark, skins or Mosaic strings. But I have received several manuscript vocabularies of the languages of Guyana, Brazil, Texas, Mexico, &c. and I have consulted several manuscripts in the libraries of Philadelphia. There are, besides, in the public or private libraries of all the great cities of both Americas, several interesting historical works, which have never been published. There are several in Philadelphia, particularly the historical collections of Simetierre. Often the best or most important works cannot be printed: while a crowd of paltry compilations are ushered to deceive the public. This may be deemed a remainder of the prevailing ignorance and error. Instead of appreciating the learned and useful works, the prevailing taste is for historical romances and systematic fables. It is needful to seek these previous labors, which run the risk of being totally lost, if we will not have again to blush hereafter for these historical losses. I give the list of such among my own manuscripts, as have been employed to write this history. They are yet in my possession, but I wish to see them deposited in a great public library; where they might be consulted. 1. Materials for the history, ethnography, &c. of the Americans, their annals, chronology, &c. 40 books, begun in 1820, continued ever since, and not yet closed. 2. Vocabularies of the ancient and modern languages of both Americas, symbols, glyphs, &c., 4 books, begun 1824. 3. Comparative geography and ethnography of ancient and modern America, 5 books, with maps, &c., begun 1824. 4. Ancient monuments of North and South America, compared with the primitive monuments of the eastern hemisphere, 3 books and 200 plans, &c., 1822. 5. TELLUS, or the primitive History of the Earth and Mankind in Protholia, Oceania and Neotholia, with the ancient and modern general ethnography, 30 books, begun in 1821. 6. Synglosson, or compared examination of all languages and nations, 6 books, begun 1825. 7. Iconographical Illustrations of all my historical works and travels, containing over 1000 maps, plans, views, costumes, portraits, alphabets, symbols, implements, &c., in 10 cartoons, begun 1816. 8. Travels in North America, in 1802, 3, 4, and from 1815 to 1835. In many manuscript books and journals.