ADMINISTRATIVE REPORT. 17 
ng on the correlation of the gold-bearing series of the Yukon-Tanana 
region. 
Topographic reconnaissance surveys were carried westward from 
Fairbanks to the Yukon and southward to the Tanana by D. C. 
^itherspoon, assisted by R. B. Oliver. An area of 6,300 square 
uiles was surveyed on a scale of 1 : 250,000. This completes the 
preliminary mapping of the Yukon-Tanana region west of the one 
Hundred and forty-fourth meridian except for a narrow belt along 
:he Tanana. In another season it is expected to complete the pre- 
iminary mapping of the area lying between Yukon and Tanana 
ivers and the one hundred and forty-second meridian. 
PUBLICATIONS ISSUED IN 1906. 
The following Alaska papers and maps were published by the Geo- 
ogical Survey during 1906: 
REPORTS INCLUDING. MAPS. 
3aker, M., and McCormick, J. C., Geographic dictionary of Alaska, .second edition: 
Bull. No. 299, 690 pp. (no maps). 
3 rooks, A. H., The geography and geology of Alaska; a summary of existing knowl- 
edge, with a section on climate by Cleveland Abbe, jr., and a topographic map 
and description thereof by R. U. Goode: Prof. Paper No. 45, 327 pp., 34 pis. 
3rooks, A. H., and others, Report on progress of investigations of mineral resources of 
Alaska in 1905: Bull. No. 284, 109 pp., 14 pis. 
jollier, A. J., Geology and coal resources of Cape Lisburne region, Alaska: Bull. No. 
278, 54 pp., 9 pis. 
Martin, G. C, Reconnaissance of the Matanuska coal field, Alaska: Bull. No. 289, 
36 pp., 5 pis. 
Soffit, F. H., and Stone, R. W., Mineral resources of the Kenai Peninsula: Gold 
fields of the Turnagain Arm region (Moffit); Coal fields of the Kachemak Bay 
region (Stone): Bull. No. 277, 80 pp., 9 pis. 
Prindle, L. M., Description of the Circle quadrangle (one of a series on the Yukon- 
Tanana region) : Bull. No. 295, 27 pp., 1 pi. 
Prindle, L. M., and Hess, F. L., The Rampart gold placer region, Alaska: Bull. No. 
280, 54 pp., 7 pis. 
MAPS PUBLISHED SEPARATELY. 
Gasadepaga quadrangle, scale 1:62,500. 
Grand Central special, scale 1:62,500. 
Nome special, scale 1:62,500. 
Solomon quadrangle, scale 1:62,500. 
REPORTS IN PREPARATION, TO APPEAR IN 1907-8. 
The following papers and maps are in various stages of preparation 
and will be published during 1907 and 1908: 
REPORTS INCLUDING MAPS. 
Blackwelder, Eliot, Geologic reconnaissance from Yakutat Bay to Alsek River. 
Brooks, A. H., and Prindle, L. M., An exploration in the Mount McKinley region 
(including a description of the Kantishna and Bonnifield districts). 
Bull. 314—07—2 
