surface management status
surface-minerals management status

A map-index of BLM maps for Oregon (scale:100,000) is kept in the green pamphlet box labeled, Oregon: maps/indexes, behind the reference desk on the 5th floor:

Intermediate Scale Map Series: Oregon, Surface and Surface/Mineral Management Editions, Bureau of Land Management, Oregon State Office, [1997].

See also the following index map showing BLM Recreation Opportunities and Facilities, including Oregon Trail Sites:

Oregon Recreation Map: Bureau of Land Management (May,1993)