Preservation of Historical Records"The National Archives is the repository for permanently valuable documents of various federal government agencies. Concerns exist about the condition of some stored paper records because of the increasing quantities that must be handled and the deteriorating condition of some of them. Various methods of preserving paper records were examined, and alternative actions for preserving the original documents or retaining more permanently the information contained in them were assessed. The accessibility requirements of the Archives retrieval system limit the acceptable preservation alternatives for most of the at-risk holdings to photocopying and photographic storage. Environmental effects are discussed, and standards for potentially dangerous airborne contaminants in the Archives storage areas are developed. Continued monitoring of potentially high-risk records is necessary so that timely corrective action can be taken."--Page xv. |
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acid Adelstein adhesion aerosol aging Air Pollut air quality alkaline ANSI Archival standards archival storage Archives and Records Archives Building areas Association Bureau of Standards California Cass cellulose Chapter chemical chemistry collection copying damage data storage deacidification deterioration digital data documents effect electrophotographic emulsion Engineering fibers files filler format Gallery hardware hydrogen bonds hydrolysis indoor inks Institute layers levels lignin long-term magnesium bicarbonate magnetic recording magnetic recording media magnetic tape mass deacidification materials mechanical microfilm micrographics monitoring Museum NARA NARA's National Archives National Bureau nitrogen nitrogen dioxide NRZI optical disk outdoor oxidation ozone paper permanence paper records paper-based particle particulate matter percent permanent paper photographic film physical pigments pollutant removal system polyester polymer preservation action problems properties recommended relative humidity sheet silver halide stability storage conditions storage medium stored sulfur dioxide TAPPI Technology temperature tion write-once µg/m³