Explore! : a visitor's guide to discovery in the national forests

Cover title

Ford Motor Company Visitor Reception Center, Dearborn, Michigan, 1971 (unbuilt project)

[Conceptual Sketch of Scheme 1], untitled. Ink sketch on white paper, 8 1/2 x 11 inches [from photographic copy by Lance Burgharrdt]

Washington Monument Visitor Center Competition, Washington, DC, 1972 (unbuilt project)

G.B. Worksheet, #43. Ink drawing on reverse of blue-line print, 14 1/4 x 18 3/4 inches [from photographic copy by Lance Burgharrdt]

Mining and mineral operations in the Rocky Mountain States : a visitor guide /

"Special publication."

Mining and mineral operations in the South-Central States : a visitor guide /

Includes bibliographies.

Mining and mineral operations in the New England and Mid-Atlantic States: a visitor guide /

Special publication.