LIBRARY CATALOGUE SLIPS. 
[Mount each slip upon a separate card, placing the subject at the top of the 
second slip. The name of the series should not be repeated on the series 
card, but the additional numbers should be added, as received, to the first 
entry.] 
Wright, Charles W. 
. . . The Porcupine placer district, Alaska, by Charles 
c W. Wright. Washington, Gov't print, off., 1904. 
35, in p. illus., 10 pi. (inch maps) 23| cm . (U. S. Geological survey. Bul- 
letin no. 236. ) 
Subject series: A, Economic geology, 37; B, Descriptive geology, 42. 
Wright, Charles W. 
. . . The Porcupine placer district, Alaska, by Charles 
W. Wright. Washington, Gov't print, off., 1904. 
35, in p. illus., 10 pi. (inch maps) 23j cm . ( U. S. Geological survey. Bul- 
letin no. 236. ) 
Subject series: A, Economic geology, 37; B, Descriptive geology, 42. 
U. S. Geological survey. 
Bulletins. 
I 110.236. Wright, C. W. The Porcupine placer district, 
Alaska. 1904. 
U. S. Dept. of the Interior. 
I see also 
1 U. S. Geological survey. 
Bull. 236—04- 
