This bibliography is the second of a series of authors' catalogues, each relating to one of the more prominent linguistic stocks of North America, which it is proposed to issue under the direction of the Bureau of Ethnology. Like its predecessor, upon the Eskimo language, published early in the present year, and its successor, upon the Iroquois, now in an advanced state of preparation, it has been compiled mainly from the writer's Proof-Sheets of a Bibliography of the Languages of the North American Indians, a quarto volume of nearly 1,200 pages, of which a small number of copies were printed in 1885 and distributed to collaborators. It was the intention to publish that volume in due time, with such emendations, corrections, and insertions as might present themselves after examination by those interested in the subject; but of late it has for many reasons been deemed more desirable to publish the material in separate parts, each relating, as stated above, to one of the more prominent linguistic stocks of North America.
As stated in the Proof-Sheets and in the Eskimo Bibliography, the material for these catalogues has been gathered during personal visits to the more prominent public and private libraries of this country, Canada, England, and France and by correspondence with missionaries, Indian agents, publishers and printers of Indian books, and owners of Americana. No opportunity has been lost to title and describe books at first hand, and in the present instance it has been found necessary to mark with an asterisk but a very small percentage of titles, whether of manuscripts, of articles in serial journals, or of books. Indeed, the author can scarcely hope to be so fortunate in dealing with any other of the linguistic groups as he has been with the Siouan. Many of those who have fashioned the literature of the language are still living; with a number of them he has been in daily contact for a number of years, and with nearly all of those still living he has been in correspondence during the past eight years. Through their aid it has been possible to make a fairly complete list of the linguistic material relating to this family of languages.
In recording this matter the dictionary plan has been followed to its extreme limit, the subject and tribal indexes, references to libraries, &c. being included in one alphabetic series. This system has been found to work so well in the Bibliography of the Eskimo Language that the writer is more than ever confirmed in his views of its excellence.