Paper Conservation: Decisions & Compromises

Paper Conservation: Decisions & Compromises Paper Conservation: Decisions & Compromises

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New Trends in Preservation in the Digital Age: New Roles for Conservators Dianne Lee van der Reyden Former Director for Preservation, Visiting Scholar at the Library of Congress, USA Introduction The role of conservators has broadened during the last several decades. This is driven in part by changes in cultural institutions, such as the Austrian National Library, the Library of Congress and others, because they are now stewards of an ever-increasing variety of documents, written, imaged, or otherwise captured in multiple media and formats. As this interim ICOM-CC conference shows, these formats range from atlases and albums to architectural drawings; broadsides to books of hours and herbaria; codices to cartoons; iron gall ink manuscripts to medieval illuminations; parchments to prints and photographs; and wall paintings to wall paper. Add to this legacy motion picture films and recorded sound cylinders, cassettes, compact discs, and other electronic analog and digital media, and the scope of formats and resultant issues facing today’s libraries, archives and museums (LAMs) can be daunting. But there are several emerging trends that expand a conservator’s capabilities in our digital age. This paper is intended to challenge conservators and other cultural stewards with a premise, a problem, and some solutions, based on those trends. Premise There are billions of cultural heritage items requiring preventive and interventive conservation actions. This fact was documented in the US by the 2004 Heritage Health Index Survey of the nation’s collections 1 , which showed that institutions holding primary source materials face the following specific challenges: • Collections, which are in fact a cultural institution’s business assets, are extraordinarily and increasingly, vast and complex, with a large percentage requiring preventive and/or interventive care. Consequently, more surveys of collection needs and demography are required to help cultural stewards prioritize the allocation of dwindling resources, based on value, use and risk criteria relevant to respective collections. 2 • Institutional staffs often lack sufficient resources and, in some cases, training. Therefore, more educational opportunities such as the ICOM-CC conferences, and more innovations such as automation, are needed to maximize efficiency in the face of all too frequent staff reductions, especially as institutional responsibilities multiply. 3 • Contemporary collections can be as vulnerable as any. It is imperative that more research into the needs of modern media is designed, funded, conducted and disseminated, before the records of our current-day accomplishments vanish without a trace. 4 Problem Despite the desire for digitization to solve the problems of collection preservation, the fact is that collection complexity, exacerbated by inclusion of digital material, is growing, not slowing, while resources are reduced or reallocated to scanning projects. What can conservators do to stem the tide of loss of collections? Solutions Conservators are among the most effective advocates for cultural stewardship. We can stem the tide of loss by harnessing digital technology to advance emerging trends in libraries, archives and museums. By harnessing these technologies, we can develop solutions for the preservation of original primary source materials to strengthen and advance the following: • Science-based research for preservation, to support the needs of collections and conservators, and other scholars, through research and development (R&D). • Cost-effective preventive preservation for improved access, to support efforts of cultural stewards through automated storage and display systems and environmental monitoring. • Preservation partnerships and conservation collaborations with funders and allied associations, to support students and professionals through hybrid educational endeavors, such as webinars, online courses, and other exercises ICOM-CC Graphic Documents Working Group Interim Meeting | Vienna 17 – 19 April 2013 8

including computer-simulated and decisionmaking modeling. Trends The solutions above are reflected in three emerging trends that expand preservation capabilities of LAMs in our digital age, and are the focus of this paper: 1 Technological science-based research and development derived from collaborations among conservators and other experts in library, computer and materials science to extract evidential information from primary source material and to expand the useful life of collections. 2 Preservation and access developments for at-risk items of high value and use through cost-effective innovative storage and display systems, as well as environmental monitoring and control. 3 Methods to maximize minimum resources through national and international partnerships, including ICOM, IFLA, ICCROM, AIC, Heritage Preservation, and others. These three trends are discussed more fully below. 1 Technological Research and Development Collaborations among conservators and other experts trained in library science, computer science and materials science expand options for using and preserving the most seminal, vulnerable, and at-risk examples of our collective cultural heritage. These collaborations are increasing the amount of valuable information extracted from primary source materials for use by scholars, utilizing diverse forensic techniques. 5 Such collaborations not only preserve evidence inherent to primary source materials, but also extend the useful life of these materials, through development of decision-making tools for new treatments (as exemplified by Library of Congress work presented on iron gall manuscripts or other treasures such as Ptolemy atlases). Other advances in forensic analysis, derived from CSI-like strategies and innovations, include hyperspectral imaging (HSI). HSI employs high resolution and false-color component analysis to characterize treasured items (such as Waldseemueller’s 1507 Universalis Cosmographia, the map that “named” America). HSI can document changes in condition over time caused by natural aging. HSI can also reveal evidential content, such as text or unique identifiers, hidden or obscured by time (as exemplified in examinations of Jefferson’s Rough Draft of the Declaration of Independence, 6 Lincoln’s Gettysburg Address, or L’Enfant’s Plan for the City of Washington). 7 Other advances have occurred in environmental scanning electron microscopy (ESEM), which can produce elemental “dot maps” using false color to identify chemical compositions, as well as reveal activation sites for deterioration in traditional and audiovisual materials. An ESEM chamber can simulate environments to mimic adverse conditions of temperature and relative humidity to image in real time their effects on collections, as a form of artificial accelerated aging. ESEM, along with HSI, can aid in prediction of useful life by tracking changes induced by simulating the effect of exposure to adverse environments of high temperature and relative humidity levels that lead to polymer chain scission from chemical breakdowns caused by thermal-oxidation or acid hydrolysis. 8 The information derived from these and other techniques can be combined to produce a composite digital image of a document, in effect a virtual “digital object” enhanced by “scripto-spatial” analysis, akin to GIS mapping. This aids authentication through detection, revelation and mapping of unique identifiers or other special features. To house the resultant vast complex of data, the Library of Congress developed a state-ofthe-art Center for the Library’s Analytical Scientific Samples (CLASS). CLASS houses physical collections (such as TAPPI Fibers, Forbes Pigments, and many others), and provides a database framework for accessing scientific information derived from sample and historic collections. It is intended to foster international scholarly studies of the Library’s unique reference sample and other data to advance science and scholarship. 9 The Library of Congress has invested in other R&D projects to advance preservation and access, included in the discussion below. 2 Preservation and Access Developments Recognition of the importance of environment on reducing change in, and risk to, primary source material has spurred investments in R&D to improve preventive preservation. Integrated automation systems have streamlined detection ICOM-CC Graphic Documents Working Group Interim Meeting | Vienna 17 – 19 April 2013 9

New Trends in Preservation in the Digital Age: New Roles for Conservators<br />

Dianne Lee van der Reyden<br />

Former Director for Preservation, Visiting Scholar at the Library of Congress, USA<br />

Introduction<br />

The role of conservators has broadened during<br />

the last several decades. This is driven in part by<br />

changes in cultural institutions, such as the Austrian<br />

National Library, the Library of Congress<br />

and others, because they are now stewards of<br />

an ever-increasing variety of documents, written,<br />

imaged, or otherwise captured in multiple<br />

media and formats. As this interim ICOM-CC conference<br />

shows, these formats range from atlases<br />

and albums to architectural drawings; broadsides<br />

to books of hours and herbaria; codices to<br />

cartoons; iron gall ink manuscripts to medieval<br />

illuminations; parchments to prints and photographs;<br />

and wall paintings to wall paper. Add to<br />

this legacy motion picture films and recorded<br />

sound cylinders, cassettes, compact discs, and<br />

other electronic analog and digital media, and<br />

the scope of formats and resultant issues facing<br />

today’s libraries, archives and museums (LAMs)<br />

can be daunting.<br />

But there are several emerging trends that<br />

expand a conservator’s capabilities in our digital<br />

age. This paper is intended to challenge conservators<br />

and other cultural stewards with a premise,<br />

a problem, and some solutions, based on those<br />

trends.<br />

Premise<br />

There are billions of cultural heritage items requiring<br />

preventive and interventive conservation<br />

actions. This fact was documented in the US by<br />

the 2004 Heritage Health Index Survey of the<br />

nation’s collections 1 , which showed that institutions<br />

holding primary source materials face the<br />

following specific challenges:<br />

• Collections, which are in fact a cultural institution’s<br />

business assets, are extraordinarily<br />

and increasingly, vast and complex, with a<br />

large percentage requiring preventive and/or<br />

interventive care. Consequently, more surveys<br />

of collection needs and demography are required<br />

to help cultural stewards prioritize the<br />

allocation of dwindling resources, based on<br />

value, use and risk criteria relevant to respective<br />

collections. 2<br />

• Institutional staffs often lack sufficient resources<br />

and, in some cases, training. Therefore,<br />

more educational opportunities such as<br />

the ICOM-CC conferences, and more innovations<br />

such as automation, are needed to maximize<br />

efficiency in the face of all too frequent<br />

staff reductions, especially as institutional<br />

responsibilities multiply. 3<br />

• Contemporary collections can be as vulnerable<br />

as any. It is imperative that more research into<br />

the needs of modern media is designed, funded,<br />

conducted and disseminated, before the<br />

records of our current-day accomplishments<br />

vanish without a trace. 4<br />

Problem<br />

Despite the desire for digitization to solve the<br />

problems of collection preservation, the fact is<br />

that collection complexity, exacerbated by inclusion<br />

of digital material, is growing, not slowing,<br />

while resources are reduced or reallocated to<br />

scanning projects. What can conservators do to<br />

stem the tide of loss of collections?<br />

Solutions<br />

Conservators are among the most effective advocates<br />

for cultural stewardship. We can stem the<br />

tide of loss by harnessing digital technology to<br />

advance emerging trends in libraries, archives<br />

and museums. By harnessing these technologies,<br />

we can develop solutions for the preservation of<br />

original primary source materials to strengthen<br />

and advance the following:<br />

• Science-based research for preservation, to<br />

support the needs of collections and conservators,<br />

and other scholars, through research and<br />

development (R&D).<br />

• Cost-effective preventive preservation for improved<br />

access, to support efforts of cultural<br />

stewards through automated storage and display<br />

systems and environmental monitoring.<br />

• Preservation partnerships and conservation<br />

collaborations with funders and allied associations,<br />

to support students and professionals<br />

through hybrid educational endeavors, such as<br />

webinars, online courses, and other exercises<br />

ICOM-CC Graphic Documents Working Group Interim Meeting | Vienna 17 – 19 April 2013<br />

8

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