180 CARNEGIE INSTITUTION OF WASHINGTON. 



Bronson, has completed the series of maps showing, at different periods, 

 the negro and slave population of the United States. He has also 

 prepared the letterpress accompanying this series. He has completed 

 a series of nine maps showing foreign-born population since 1860, has 

 brought well toward completion a series of eight illustrating immigra- 

 tion since 1820, and has done parts of the work necessary for the maps 

 illustrating colonial charters and patents, territorial claims of European 

 powers, cessions of land by Indian tribes, and the history of the public 

 domain of the United States. 



Mr. David M. Matteson, of Cambridge, has devoted a large part of 

 his time during the year to the compilation described on pages 142 

 and 143 of the last Annual Report of the Department. The work has 

 proved to be of much greater magnitude than was expected, but con- 

 viction of its utiHty remains undiminished. It consists of two parts. 

 It is necessary, first, to find, by thorough bibliographical search in 

 various libraries, all the catalogues they contain of the collections of 

 manuscripts in European libraries, including those lists embedded in 

 general catalogues, and all those small or fragmentary catalogues of 

 manuscripts that are to be found in, or heard of through, learned peri- 

 odicals or similar repertories. The second process is that of searching 

 these catalogues for those items that disclose and describe manuscripts 

 relating to American history, and drawing off those items for use in the 

 proposed manual. The first of these two processes is now nearly 

 complete, so far as the libraries of Boston, Cambridge, and Washing- 

 ton are concerned (Mr. Matteson having spent June in Washington), 

 and not much is likely to be found by such searches in other American 

 libraries as are contemplated. The second process has been carried 

 out in the case of those catalogues found in the Library of Congress and 

 not found in the libraries of Boston and Cambridge. 



TEXTUAL PUBLICATIONS OF DOCUMENTS. 



Miss Davenport has been able to make ready for pubhcation four 

 more treaties, 1662-1667, for the second volume of her ''European 

 Treaties bearing on the History of the United States." 



Dr. Burnett has advanced the final preparation of his "Letters of 

 Delegates to the Continental Congress" to the beginning of May 1781, 

 completing somewhat more than the third volume of the manuscript. 

 When the Director had finished his examination of the manuscript 

 of the first volume, it was concluded to effect, in the interest of economy 

 in press corrections, and of consequent exactness in printing, a change 

 in the whole system of cross-references in footnotes. This has de- 

 layed presentation of the manuscript, but it is now ready, and vol- 

 umes II and III will be ready, and will be offered for publication, as soon 

 as the Director has found time to carry through his own examination 

 of these manuscripts. The first volume runs from the beginning of 



