XXXil 
1887. 
1888. 
INTRODUCTION. 
LITERATURE. 
The following list comprises the principal scientific publications upon 
Aspen and its mines, as far as known to the writer: 
il, 
(a) 
5, 10. 
Geology of the Aspen Mining Region, Pitkin County, Colo., by A. Lakes: Biennial report 
of the State School of Mines, Denver, 1887, pp. 45-84. 
. Preliminary Notes on Aspen, Colo., by S. F. Emmons: Proc. Colorado Scientific Society, 
Vol. Il, Part 3, 1887, pp. 251-277. 
. Geology of the Aspen Ore Deposits, by L. D. Siver: Eng. and Min. Jour., Vol. XLV, Mar. 
17, 1888, p. 195, and Mar. 24, 1888, p. 212. 
. Notes on the Geology and Some of the Mines of Aspen Mountain, Pitkin County, Colo., 
by Carl Henrich: Trans. Am. Inst. Min. Eng.. Vol. XVII, May, 1888, pp. 156-161. 
. Aspen, Its Ores and Mode of Occurrence, by D. W. Brunton: Eng. and Min. Jour., Vol. 
XLVI, July 14, 1888, p. 22, and July 21, 1888, p. 42. 
. Geology of Colorado Ore Deposits, by A. Lakes; Denver, 1888, pp. 119-153. 
. Notes on the Geology of the Aspen Mining District, by W. E. Newberry: Trans. Am. 
Inst. Min. Eng.. Vol. XVIII, June, 1889, pp. 273-278. 
. The Use of Electric Power Transmission at Aspen, Colo., by C. E. Doolittle: Trane, Am, 
Inst. Min. Eng., Vol. XIX, Oct., 1890, pp. 282-288. 
. Electricity in Mining as Applied by the Aspen Mining and Smelting Company, by M. B. 
Holt: Trans. Am. Inst. Min. Eng., Vol. XX, Oct., 1891, pp. 316-324. 
An Experiment in Cooperative Mining, by D. W. Brunton: Eng. and Min. Jour., Aug. 
3, 1895. 
