Annual reports of the Secretary of the Interior.

Annual reports of the Commissioner of the General Land Office,
Department of the Interior, Washington.

The General Land Office has published a large wall map showing the
land surveys, the national forests, and many other important
items. It may be secured from the Superintendent of Documents,
Government Printing Office, Washington, for $1.

See the New International Encyclopedia and the Encyclopedia
Americana on public lands, national forests, and other topics
referred to in this chapter.

In LESSONS IN COMMUNITY AND NATIONAL LIFE:

Series A: Lesson 4, What nature has done for a typical city.





CHAPTER XV

CONSERVING OUR NATURAL RESOURCES

RESOURCES OF THE SOIL