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Selected Published Primary Source Collections
Some Published Source Materials
- Google Books (Advanced Book Search Screen)
- Access to thousands of full-text nineteenth and early twentieth century titles in the public domain (up through 1922). Available to read online or download to PDF format
- Internet Archive: E-Books and Texts
- Over 3 million scanned texts public domain, including many nineteenth and early twentieth century titles (up through 1922). century titles.
The Environmental Debate: A Documentary History,, Third Edition by 