PUBLICATIONS ON ALASKA. 
Copper River region; scale, 1:376000. Contained in "A reconnaissance of a pa 
of Prince William Sound and the Copper River district, Alaska, in 1898 
Twentieth Ann. Rept., pt. 7, 1900., pp. 341-423. P. G. Lowe, Emil Mahlo, ai 
F. C. Schrader. (Out of stock. ) 
Fairbanks and Birch Creek districts, reconnaissance maps of; scale, 1:250000. Co: 
tained in "The gold placers of the Fortymile, Birch Creek, and Fairbanl 
regions." Bull. No. 251, 1905. T. G. Gerdine. 
Fort Yukon to Kotzebue Sound, reconnaissance map of; scale, 1:625000. Contain* 
in "Reconnaissance from Fort Hamlin to Kotzebue Sound, Alaska, by way j 
Dall, Kanuti, Allen, and Kowak rivers." Prof. Paper No. 10, 1902. D. J 
Reaburn. 
Koyukuk River to mouth of Colville River, including John River; scale, 1 : 62500( 
Contained in "A reconnaissance in northern Alaska across the Rocky Mountain; 
along Koyukuk, John, Anaktuvuk, and Colville rivers, and the Arctic coast t 
Cape Lisburne, in 1901." Prof. Paper No. 20. W. J. Peters. 
Koyukuk and Chandlar rivers, portions of; scale, 1:625000. Contained in "Prelin 
inary report of a reconnaissance along the Chandlar and Koyukuk riven 
Alaska, in 1899." Twenty-first Ann. Rept., pt. 2, 1900. T. G. Gerdine. 
Lynn canal, routes from, via headwaters of White and Tanana rivers to Eagle Cit\ 
scale, 1:625000. Contained in "A reconnaissance from Pyramid Harbor t 
Eagle City. Alaska." Twenty-first Ann. Rept., pt. 2, 1900, pp. 331-391. W. J 
Peters. 
Mount McKinley region; scale, 1:625000. Contained in " The geography and ge61 
ogy of Alaska, a summary of existing knowledge, etc." Prof. Paper No. 45 
D. L. Reaburn. 
Norton Bay region; scale, 1 : 625000. Contained in a special publication of the Unite* 
States Geological Survey, entitled " Reconnaissances in the Cape Nome and Nor 
ton Bay regions, Alaska, in 1900." Washington. Government Printing Office 
L901. W. J. Peters. 
Porcupine placer region; scale, 1 inch=3! miles. Contained in "The Porcupine 
placer district, Alaska." Bull. No. 236. C. W. Wright. 
Prince William Sound, sketch map of; scale 1:376000. Contained inaspecial pub 
lication of the United States Geological Survey, entitled "The geology and min 
eral resources of a portion of the Copper River district, Alaska." Washington 
Government Printing Office, 1901. Emil Mahlo and F. C. Schrader. 
Seward Peninsula, northeastern portion of, topographic reconnaissance of; scale. 
L f 250000. Contained in "The Tairhaven gold placers, Seward Peninsula. 
Alaska." Bull. No. 247, 1905. D. C. Witherspoon. 
Seward Peninsula, northwestern part of; scale, L: 250000. Contained in "A recon- 
naissance of the northwestern portion of Seward Peninsula, Alaska." Prof. 
Paper No. 2, 1902. T. G. Gerdine. 
Sushitna River and adjacent territory; scale, L:625000. Contained in "A recon- 
naissance in the Sushitna basin and adjacent territory, Alaska, in I898.'j 
Twentieth Ann. Rept., pt. 7, L900, pp. L-29. Robert Muldrow. 
Tanana and White rivers, portions of; scale, L:625000. Contained in "A recon- 
naissance in the Tanana and White River basins, Alaska, in 1898." Twentieth 
Ann. Rept., pt. 7, 1900, pp. 425-494. W. J. Peters. 
York region; scale, 1:250000. Contained in "The tin deposits of the York region^ 
Alaska." Bull. No. 229. T. G. Gerdine. 
York and Kugruk regions, sketch maps of. Contained in a special publication 
of the United States Geological Survey, entitled " Reconnaissances in Cape Nome 
and Norton Bav regions, Alaska, in 1900." Washington. Government Printing 
Office, 190L A. H. Brooks. 
Yukon-Tanana region, reconnaissance map of ; scale, 1:625000. Contained in "The 
gold placers of the Fortymile, Birch Creek, and Fairbanks regions, Alaska." Bull. 
No. 251. T. G. Gerdine. 
Topographic Maps of Alaska in Preparation. 
Casadepaga Special, Seward Peninsula; scale, 1:62500. T. G. Gerdine. 
Circle sheet, Yukon-Tanana region; scale, 1:250000. D. C. Witherspoon. 
Controller Bay region, special map of ; scale, 1:62500. E. G. Hamilton. 
Fairbanks placer district; scale, 1:250000. I). C. Witherspoon. 
Solomon Special, Seward Peninsula, special map of; scale, 1:62500. T. G. Gerdine. 
