Explores the meanings that have been attached to the term "archival" and concludes that librarians participating in the national preservation effort use this term to mean permanent. Permanence is practically defined as storage for upwards of 100 years. Given this definition, the merits of microforms and optical disks as archival storage materials…

The rapid growth and distribution of scholarly research in the middle and late twentieth century, the limited supply of old books and other paper-based materials, and the deterioration of items printed on acidic paper since the mid-1800s have meant that many libraries lack suitable copies of printed sources that their users would like to read. For…