U. S. Bureau of Mines Open-File Report MLA 65-83 Options

[llamabox]

Doing research I have seen this study referenced many times but I can't seem to find it or a way to request a copy of it. I have found some of the accompanying work that has come in helpful, but if anyone can help me find this one I would be very thankful.

U. S. Bureau of Mines Open-File Report MLA 65-83
Mineral investigation of the Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado:Ellis, C.E., Hannigan, B.J., and Thompson, J.R., 1983

[llamabox]

Just trying to get more info. Not sure what exactly is in the report. It has been cited in a number of places while doing research on old/closed claims. Such as this one,

Sampling by Ellis and others (1983) produced grades up to 0.58 oz/ton gold, 2.8 oz/ton silver, and 2% copper from iron- and copper-stained gneissic fault gouge, silicified fault breccia, and quartz veins.

Is that quote for that claim exactly or for the general area. Did the Bureau of Mines do sampling from each of the past producers in the area?
I was able to find this one done the next year.
Mineral resource potential map of the Sangre de Cristo Wilderness study area, south-central Colorado
1984, Johnson, B. R.; Lindsey, D. A.; Ellis, C. E.; Hannigan, B. J.; Thompson, J. R.
USGS Miscellaneous Field Studies Map: 1635-A http://pubs.usgs.gov/mf/1984/1635a/report.pdf