IRREGULAR PUBLICATIONS.
In the interests of exact bibliography, the Society takes cognizance of all publications issued either wholly or partly under its auspices. Each author of a memoir published in THE NATIONAL GEOGRAPHIC MAGAZINE receives 25 copies, and is authorized to order any number of additional copies at a slight advance on the cost of press-work and paper; and these separate brochures are identical with those of the regular edition issued by the Society. Contributors to the magazine brochures are authorized to order any number of copies of their contributions at a slight advance on cost of press-work and paper, provided these separates bear the original pagination and a printed reference to the serial and volume from which they are extracted; but such separates are bibliographically distinct from the brochures issued by the Society. The Magazine is not copyrighted, and articles may be reprinted freely; and a record of reprints, so far as known, is kept.
The following separates and reprints from volume III have been issued:
Editions uniform with the Brochures of the Magazine.
| Pages 1–30, plate 1: | 150 copies, | March 28, 1891. |
| Pages 31–40, | 25 copies, | May 2, 1891. |
| Pages 41–52, | 25 copies, | May 2, 1891. |
| Pages 53–204, plates 2–20: | 250 copies, | May 29, 1891. |
Special Editions.
| Pages 205–230, plate 21: | 50 copies, | February 18, 1892. |
| Pages 231–237, | 100 copies, | February 16, 1892. |
| Page v, | 1000 copies, | February 19, 1892. |
| Pages xv–xxxv, | 50 copies, | February 13, 1892. |
Reprints.
| Pages 196–198, | 100 copies, | January 3, 1892. |