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51
Oral history interview with Tim and Byron Shanahan, 1989
52
Rex No. 1 mine photographs, 1912-1913
53
Portrait and Biographical Record of Denver and Vicinity, Colorado collection, 1898
54
Oral history interview with Joseph Wallace Malcolm, 1990
55
Coal mines and mining (Colo.) typescripts undated
56
Consumers coal tipple
57
Colorado Prospector : historical highlights from early day newspapers, 1975 Oct
58
William A. Willis biographical sketch, 1898
59
Timothy Shanahan biographical sketch, 1898
60
Boulder Daily Camera Industrial Number, 1910
61
Superior
62
Coal mines and mining (Boulder County, Colo.) clippings
63
James H. Hood biographical sketch, 1898
64
Rex no. 2 Mine in Marshall, Colorado
65
Black Diamond Mine (Boulder County, Colo.) printed materials 1930-1951
66
Focus Magazine 1970 January 25
67
Marshall Consolidated Coal Mine (Langford, Colo.)
68
Black Diamond Coal Mine (Lafayette, Colo.)
69
Marshall Consolidated Coal Mine (Langford, Colo.)
70
Boarding house at the Marshall Mine in Marshall, Colorado
71
Focus Magazine 1974 March 24
72
Hi-Way Mine (Louisville, Colo.)
73
Simpson mine photographs, 1912-1913
74
Columbine incident / 1989
75
Oral history interview with Louis and Mary Marguerite Stengel, 1983

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