X PUBLICATIONS ON ALASKA. 
Copper, Nabesna, and Chisana rivers, headwaters of; scale, 1 : 250000. Containej 
in "Geology of the central Copper River region, Alaska." Prof. Paper No. 41 
D. C. Witherspoon. 
Copper River region; scale, 1:376000. Contained in "A reconnaissance of a par 
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, and 
F. C. Schrader. (Out of stock.) 
Fairbanks and Birch Creek districts, reconnaissance maps of ; scale, 1:250000. Con- 
tained in "The gold placers of the Fortymile, Birch Creek, and Fairbanks 
regions." Bull. No. 251, 1905. T. G. Gerdine. 
Fort Yukon to Kotzebue Sound, reconnaissance map of; scale, 1:625000. Contained 
in "Reconnaissance from Fort Hamlin to Kotzebue Sound, Alaska, by way of 
Dall, Kanuti, Allen, and Kowak rivers." Prof. Paper No. 10, 1902. D. L. 
Reaburn. 
Koyukuk River to mouth of Colville River, including John River; scale, 1:625000. 
Contained in " A reconnaissance in northern Alaska across the Rocky Mountains, 
along Koyukuk, John, Anaktuvnk, and Colville rivers, and the Arctic coast to 
Cape Lisburne, in 1901." Prof. Paper No. 20. W.J.Peters. 
Koyukuk and Chandlar rivers, portions of; scale, 1:625000. Contained in "Prelim 
inary reporl of a reconnaissance along the Chandlar and Koyukuk rivers 
Alaska, in 1899." Twenty-first Ann. Rept., pt. 2, 1900. T. G. Gerdine. 
Lynn canal, mutes from, via headwaters of White and Tanana rivers to Eagle City 
scale, 1:625000. Contained in "A reconnaissance from Pyramid Harbor to 
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 geol 
ogy of Alaska, a summary of existing knowledge, etc." Prof. Paper No. 45 
D. L. Reaburn. 
Norton Bayregion; scale. L:625000. Contained in a special publication of the Unite! 
states ( reological 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 in a special 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. 
( rovernment Printing Office, 1901. Emil .Mahlo and F. C. Schrader. 
Seward Peninsula, uortheastern portion of, topographic reconnaissance of; scale, 
1:25000»>. Contained in "The Fairhaven gold placers, Seward Peninsula, 
Alaska." Bull. No. 247, 1905. D. C. Witherspoon. 
Seward Peninsula, northwestern pari of; scale, 1:250000. Contained in "A reconl 
naissance of the northwestern portion of Seward Peninsula, Alaska." Prof. 
Paper No. 2, L902. T. (i. Gerdine. 
Sushitna River and adjacent territory; scale, L: 625000. Contained in "A recon- 
naissance in the Sushitna basin and adjacent territory, Alaska, in 1898." 
Twentieth Ann. Kept., pt. 7, L900, pp. L-29. Robert Muldrow. 
Tanana and White rivers, portions of; scale, 1:625000. Contained in "A recon- 
naissance in the Tanana and White River basins, Alaska, in 1898." Twentieth 
Ann. Rept, pt. 7. 1900. pp. 425 194. 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 ancf Kugruk regions, sketch maps of. Contained in a special publication 
of the United States Geological Survey, entitled "Reconnaissances in Cape Nome 
ami Norton Bay regions, Alaska, in 1900." Washington. Government Printing 
Office, L90L A. II. Brooks. 
Yukon-Tanana region, reconnaissance map of; scale, 1; 625000. Contained in "The 
gold placersofthe Fortymile, Birch Creek, and Fairbanks regions, Alaska." Bull. 
No. 251. T. <;. Gerdine. 
Topographic Maps of Alaska in Preparation. 
Berners Bay Special: scale, 1:62500. R. B. Oliver. 
Controller Bay region Special; scale, 1:62500. E. G. Hamilton. 
Fairbanks quadrangle; scale, 1:250000. D. C. Witherspoon. 
Rampart quadrangle; scale, 1:250000. D. C. Witherspoon. 
Reconnaissance map of Matanuska River region; scale, 1:250000. T. G. Gerdine 
and R. H. Sargent. 
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