# Gutenberg List of Reference Books

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- The Project Gutenberg Encyclopedia, volume 1 of 28
- The 1994 CIA World Factbook
- The 1993 CIA World Factbook
- The 1992 CIA World Factbook
- 1990 USA Census Sample
- The Jargon File, ed. by Eric Raymond
- The 1990 United States Census
- Roget's Thesaurus of English Words and Phrases
- Price/Cost Indexes from 1875 to 1989 [Estimated to 2010]
- United States Census Figures Back to 1630

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Frederick.