George H. Girty: The Fauna of The Moorefield Shale of Arkansas. 
Bulletin 439. Washington 1911. 
N. M. Fennemann: Geology and Mineral Resources of the St. Louis 
Quadrangle Missouri -Illinois. Bulletin 438. Washington 1911. 
R. B. Marshall, Chief Georgrapher! Results of Spirit Leveling in Ala- 
bama, Georgia, North Carolina, South Carolina and Tennesee 
1896 to 1909. Bulletin 411. Washington 1910. 
Edson S. Bastin: Geology of The Pegmatites and Associated Rocks 
of Maine. Bulletin 445. Washington 1911. 
Adolf Knopf: Geology of the Berners Bay Region Alaska. Bulletin 
446. Washington 1911. 
W. C. Phalen and Lawrence Martin: Mineral Resources of Johnstown, 
Pennsylvania and Vicinty. Bulletin 447. Washington 1911. 
R. B. Marshall: Results of Spirit Leveling in Minnesota 1897 to 1910. 
Bulletin 453. Washington 1911. 
C. W. Hayes: The State Geologigal Surveys of the United States. 
Bulletin 465. Washington 1911. 
Yearbook of the United States. Department of Agriculture. Washing- 
ton 1911. 
Marius R. Campbell : Contributions to Economic Geology 1909 Part. II 
— Mineral Fuels. Bulletin 431. Washington 1911. 
Sidney Paige: Mineral Resources of the Llano-Burnet Region, Texas 
Bulletin 450. Washington 1911. 
C. H. Wegemann: The Lander and Salt Creek Oil Fields Wyoming. 
Bulletin 452. Washington 1911. 
R. B. Marshall, Chief Geographen Results of Spirit Leveling in the 
State of Washington 1896 to 1910. Bulletin 457. Washington 1911. 
R. B. Marshall : Results of Spirit Leveling in Arkansas, Louisiana, and 
Mississippi 1896 to 1909. Bulletin 458. Washington 1911. 
R. B. Marshall: Results of Spirit Leveling in Missouri 1896 to 1909. 
Bulletin 459. Washington 1911. 
