PUBLICATIONS OK ALASKA. 201 
Collier, A. J. The Glenn Creek gold mining district, Alaska. In Contributions to 
economic geology, 1902: Bull. U. S. Geol. Survey No. 213, 1903, pp. 49-56. 
Mendenhall, W. C. The Chistochina gold field, Alaska. In Contributions to 
economic geology, 1902: Bull. U. S. Geol. Survey No. 213, 1903, pp. 71-75. 
and Schrader, F. C. Copper deposits of the Mount Wrangell region, Alaska. 
In Contributions to economic geology, 1902: Bull. U. S. Geol. Survey No. 213, 
1903, pp. 141-148. 
The mineral resources of the Mount Wrangell district, Alaska. Professional 
Paper U. S. Geol. Survey No. 15, 1903, pp. 1-71. 
Walcott, C. D., Director. Account of operations in Alaska in 1903. In Twenty- 
fourth Ann. Rept. U. S. Geol. Survey, 1903, pp. 78-107, 167, 256. 
1904. 
Brooks, A. H. Placer gold mining in Alaska in 1903. In Contributions to economic 
geology, 1903: Bull, U. S. Geol. Survey No. 225, 1904, pp. 43-59. 
Collier, A. J. Tin deposits of the York region, Alaska. In Contributions to eco- 
nomic geology, 1903: Bull. U. S. Geol. Survey No. 225, 1904, pp. 154-167. 
Martin, G. C. Petroleum fields of Alaska, and the Bering River coal field. In 
Contributions to economic geology, 1903: Bull. U. S. Geol. Survey No. 225, 
1904, pp. 365-382. 
Moffit, F. H. The Kotzebue placer-gold field of Seward Peninsula, Alaska. In 
Contributions to economic geology, 1903: Bull. U. S. Geol. Survey No. 225, 
1904, pp. 74-80. 
Prindle, L. M. Gold placers of the Fairbanks district, Alaska. In Contributions to 
economic geology, 1903: Bull. U. S. Geol. Survey No. 225, 1904, pp. 64-73. 
Schrader, F. C, and Peters, W. J. A reconnaissance in northern Alaska across 
the Pocky Mountains, along the Koyukuk, John, Anaktuvuk, and Colville 
rivers, and the Arctic coast to Cape Lisburne, in 1901. Professional Paper 
U. S. Geol. Survey No. 20, 1904, pp. 1-139. 
Spencer, A. C. The Juneau gold belt, Alaska. In Contributions to economic geol- 
ogy, 1903: Bull. U. S. Geol. Survey No. 225, 1904, pp. 28-42. 
Wright, C. W t . The Porcupine placer mining district, Alaska. In Contributions 
to economic geology, 1903: Bull. U. S. Geol. Survey No. 225, 1904, pp. 60-63. 
Papers on Alaska in Preparation. 
Brooks, A. H. A reconnaissance in the Mount McKinley region, Alaska. 
Geography of Alaska. 
Collier, A. J. Placer mines of the Nome region, Alaska. 
Tin ores of the York region, Alaska. 
and Hollick, C. A. The geology of the Yukon. 
Mendenhall, W. C. The geology of the central Copper River Basin. 
Moffit, F. H. A reconnaissance of the northwestern portion of Seward Peninsula. 
Prindle, L. M. A reconnaissance of the Fortymile, Birch Creek, and Fairbanks 
gold placer districts, Alaska. 
Schrader, F. C. The geology of the upper Copper and Tanana rivers. 
Spencer, A. C. The geology of the Treadwell mines, Alaska. 
The Juneau gold belt, Alaska. 
