Bulletin of the United States Geological and Geographical Survey of the Territories /
Geological and Geographical Survey of the Territories (U.S.)
Washington : Government Printing Office,
1874-
"The first and second bulletins, which appeared in 1874, are separately paged pamphlets...constituting a 'First Series' of the publication. Bulletins which appeared in 1875, being those of a 'Second series' and six in number, are continuously paged. With no. 6 were issued title, contents, index, & c., for all the numbers of both 'series' which had then appeared; the design being that these should together constitute volume I, in order that the inconvenient distinction of 'series' might be dropped." Cf. v. 6, prefatory note.
Geology
Bulletin of the United States Geological Survey