A museum is distinguished by a collection of often unique objects that forms the core of its activities for exhibitions, education, research, etc. This differentiates it from an archive or library, where the contents may be more paper-based, replaceable and less exhibition oriented, or a private collection of art formed by an individual, family or institution that may grant no public access. A museum normally has a collecting policy for new acquisitions, so only objects in certain categories and of a certain quality are accepted into the collection. The process by which an object is formally included in the collection is called accessioning and each object is given a unique accession number.
Museum collections, and archives in general, are normally catalogued in a collection catalogue, traditionally in a card index, but nowadays in a computerized database. Transferring collection catalogues onto computer-based media is a major undertaking for most museums. All new acquisitions are normally catalogued on a computer in modern museums, but there is typically a backlog of old catalogue entries to be computerized as time and funding allows.
A museum's permanent collection are assets that the museum owns and may display, although space and conservation requirements often mean that most of a collection is not on display. Museums often also host temporary exhibitions of works that may come all or partly from their permanent collection, or may be all or partly loaned (a "loan exhibition"). A travelling exhibition is shown in more than one venue; these tend to be either large loan exhibitions which may be exhibited at two or three venues in different countries, or selections from the collection of a large museum which tour to a number of regional museums.
Museum collections are widely varied. There are collections of art, of scientific specimens, of historic objects, of living zoological specimens and much more. Because there are so many things to collect, most museums have a specific area of specialization. For example, a history museum may only collect objects relevant to a particular county or even a single person, or focus on a type of object such as automobiles or stamps. Art museums may focus on a period, such as modern art, or a region. Very large museums will often have many sub-collections, each with its own criteria for collecting. A natural history museum, for example, will have mammals in a separate collection from insects.
Because museums cannot collect everything, each potential new addition must be carefully considered as to its appropriateness for a given museum's defined area of interest.
Accessioning is the formal, legal process of accepting an object into a museum collection. Because accessioning an object carries an obligation to care for that object in perpetuity, it is a serious decision. While in the past many museums accepted objects with little deliberation, today most museums have accepted the need for formal accessioning procedures and practices. These are typically set out as part of a museum's collection management policy (CMP).
While each museum has its own procedures for accessioning, in most cases it begins with either an offer from a donor to give an object to a museum, or a recommendation from a curator to acquire an object through purchase or trade. Art objects may also come into a collection as a commission. An accession may also be bequeathed to a museum and are included in an estate or trust.
Several issues must be considered in the decision to accept an object. Common issues include:
Answering these questions often required investigating an object's provenance, the history of an object from the time it was made.
Many museums will not accession objects that have been acquired illegally [1] or where other parties have an interest in the object.[ citation needed ] In art museums, special care is given to objects that changed hands in European countries during World War II and archaeological objects unearthed after the 1970 UNESCO Convention covering the transport of cultural property. Other disciplines have different concerns. For example, anthropology museums will pay special attention to Native American objects that may be subject to repatriation, and paleontology museums may look carefully at whether proper permitting procedures were followed when they are offered fossil collections.
While in the past, museums often accepted objects with donor-based restrictions, many museums today ask that gifts be given unrestricted. Common donor restrictions include requiring that an object always be exhibited, or that a collection stays together. However, such restrictions can prevent museums from changing their exhibits as scholarship evolves and may introduce conservation issues for delicate objects not suited to continued display.
Final decision to accept an object generally lies with the museum's board of trustees. In large museums, a special committee may meet regularly to review potential acquisitions. Once the decision has been made to accept an object, it is formally accessioned through a Deed of Gift and entered into the museum's catalog records. Each object is given a unique catalog number to identify it. Objects are then packed for appropriate archival storage, or prepared for exhibition or other educational use.
Once accessioned into the collection, museum objects must be appropriately cared for. New objects may be examined by a conservator and treated for any pre-existing damage. The object is then cataloged by a curator or other specialist with knowledge of the object's importance and history. The object will then be given an appropriate storage location.
Museum storage conditions are meant to protect the object and to minimize any deterioration. This often means keeping objects in a stable climate, preventing exposure to pests, minimizing any handling, and using only archival materials that will not deteriorate or harm the objects. Object safety also include providing appropriate security, and planning for disasters and other threats, and making sure that museum staff are trained in proper handling procedures.
Different types of objects have different requirements, and many museums have specialized storage areas. For example, framed paintings may be stored in racks in one room while unframed paintings are kept in large drawers in another. Some objects have extremely specialized needs. For example, material from underwater archaeological sites may need to be kept wet, and some very rare and badly deteriorated objects require oxygen-free environments.
At any given time, museums display only a portion of their collections. This is often because exhibition requires much more space than storage, and is impractical for the entire collection to be out. Museums may also contain many duplicate or similar objects and find that a few specimens are better suited to display than others. In addition, certain objects, particularly works on paper and textiles, are damaged by light and must only be displayed for short periods of time.
Museum collections are often made up of a variety of materials in a single collection including, but not limited to: canvas, oil and/or acrylic paints, wood, ivory, paper, bone, leather, and textiles. The biggest conservation issue for museum collections is the fluctuations in relative humidity and temperature. [2] Relative Humidity (RH) is a measure of the percentage of saturation of the air.
Temperature is not as important to the life of a work of art, but it is true that chemical reactions occur faster at higher temperatures. However, a museum must take into account the comfort of its staff and visitors and it has been widely accepted that 68–75 °F (20–24 °C) does not cause a lot of problems for most artifacts and is comfortable for most humans. [2]
It has also been internationally agreed upon that the RH should be set at 50–55%. [3] This has become widely accepted because the lower limit was set at 45% since damage to organic materials begin to occur below this point. The upper limit is placed at 65% because mold flourishes at 70% RH. [4] It is also cheaper for most institutions to maintain 50% RH rather than 45% or 60%. [5] There is some exception when it comes to tropical climates since the indigenous artifacts are acclimated to RH levels higher than the "museum norm". [5] Changes can be made to a museum's RH to accommodate the changing seasons, but they must be made gradually. Humidity should change in 2% per month increments (an increase in 1 °F will affect a decrease of about 2% RH). [4]
Deaccessioning, the process of disposing, selling or trading objects from a museum collection, is not undertaken lightly in most museums. There are ethical issues to consider since many donors of objects typically expect the museum to care for them in perpetuity. Deaccessioning of an object in a collection may be appropriate if a museum has more than one example of that object and if the object is being transferred to another museum. It may also be appropriate if an object is badly deteriorated or threatening other objects.
The decision to deaccession includes two parts. These are making the decision to deaccession and deciding the method of disposal. Generally, first choice is to transfer an object to another use or division in a museum, such as deaccessioning a duplicate object from a permanent collection into a teaching collection. Second choice is to transfer the object to another institution, generally with local institutions having priority. The American Alliance of Museums and other regional associations often operate lists or boards to help facilitate such transfers. Last choice is sale on the open market. Open market sales are generally expected to take place at auction rather than through private sale, and are typically most common in art museums due to the high monetary value of art collections.
A controversial example occurred when the last remaining complete dodo mount in a museum collection at Oxford University was deaccessioned due to its deterioration in 1775. [6] Another case was the sale of a J. M. W. Turner painting in the collection of Royal Holloway, University of London to the Getty Museum to fund the maintenance of the building, despite the fact that the original benefactor had expressly requested that the collection be kept intact. [7]
Many ethical guidelines for deaccessioning require that the funds generated by disposing of collection items be used only to increase or maintain the remaining collection. For example, the International Council of Museums (ICOM) Code of Ethics states that:
"Money or compensation received from the deaccessioning and disposal of objects and specimens from a museum collection should be used solely for the benefit of the collection and usually for acquisitions to that same collection". [8]
In the United Kingdom, guidelines governing deaccessioning and other ethically difficult issues can be found in the Museums Association's Code of Ethics. In the United States, the guidelines on these matters are issued by the American Alliance of Museums. [9]
The American Alliance of Museums Code of Ethics takes the position that "in no event shall they [deaccessioning proceeds] be used for anything other than acquisition or direct care of collections". [9]
Other museums may have additional restrictions on the use of funds from deaccessioning. For example, at some museums funds from deaccessioning a work of art can only be used to purchase a work of similar style or period (for example, funds from selling a 20th-century American print could not be used to buy a 17th-century Italian painting) and the name of the donor of the sold work remains associated with the purchased artwork.
Selling artwork to fund budget deficits and pay salaries has been compared to "burning down your house to heat the kitchen." [10]
The conservation and restoration of cultural property focuses on protection and care of cultural property, including artworks, architecture, archaeology, and museum collections. Conservation activities include preventive conservation, examination, documentation, research, treatment, and education. This field is closely allied with conservation science, curators and registrars.
A museum is an institution dedicated to displaying and/or preserving culturally or scientifically significant objects. Many museums have exhibitions of these objects on public display, and some have private collections that are used by researchers and specialists. Museums host a much wider range of objects than a library, and usually focus on a specific theme, such as the arts, science, natural history or local history. Public museums that host exhibitions and interactive demonstrations are often tourist attractions, and many attract large numbers of visitors from outside their host country, with the most visited museums in the world attracting millions of visitors annually.
A curator is a manager or overseer. When working with cultural organizations, a curator is typically a "collections curator" or an "exhibitions curator", and has multifaceted tasks dependent on the particular institution and its mission. The term "curator" may designate the head of any given division, not limited to museums. Curator roles include "community curators", "literary curators", "digital curators", and "biocurators".
A conservator-restorer is a professional responsible for the preservation of artistic and cultural artifacts, also known as cultural heritage. Conservators possess the expertise to preserve cultural heritage in a way that retains the integrity of the object, building or site, including its historical significance, context and aesthetic or visual aspects. This kind of preservation is done by analyzing and assessing the condition of cultural property, understanding processes and evidence of deterioration, planning collections care or site management strategies that prevent damage, carrying out conservation treatments, and conducting research. A conservator's job is to ensure that the objects in a museum's collection are kept in the best possible condition, as well as to serve the museum's mission to bring art before the public.
Conservation and restoration of movable cultural property is a term used to denote the conservation of movable cultural property items in libraries, archives, museums and private collections. Conservation encompasses all the actions taken toward the long-term preservation of cultural heritage. Activities include examination, documentation, treatment, and preventive care, which is supported by research and education. Object conservation is specifically the actions taken to preserve and restore cultural objects. The objects span a wide range of materials from a variety of cultures, time periods, and functions. Object conservation can be applied to both art objects and artifacts. Conservation practice aims to prevent damage from occurring, a process known as 'preventive conservation'. The purpose of preventive conservation is to maintain, and where possible enhance, the condition of an object, as well as managing deterioration risks, such as handling and environmental conditions. Historically, object conservation was focused on the category of fine arts but now many different types of objects are conserved. Each type of object material, typically denoted by organic or inorganic then the specific medium, requires a specialized professional conservator and often requires collaborative work between museum staff, scientists, and conservators.
Collection maintenance is an area of collections management that consists of the day-to-day hands on care of collections and cultural heritage. The primary goal of collections maintenance or preventive conservation is to prevent further decay of cultural heritage by ensuring proper storage and upkeep including performing regular housekeeping of the spaces and objects and monitoring and controlling storage and gallery environments. Collections maintenance is part of the risk management field of collections management. The professionals most involved with collections maintenance include collection managers, registrars, and archivists, depending on the size and scope of the institution. Collections maintenance takes place in two primary areas of the museum: storage areas and display areas.
A collection manager ensures the proper care and preservation of objects within cultural institutions such as museums, libraries, and archives. Collection managers, along with registrars, curators, and conservators, play an important role in collections care. Collection Managers and Registrars are two distinct collection roles that are often combined into one within small to mid-size cultural institutions. Collection Managers can be found in large museums and those with a history and natural history focus whose diverse collections require experienced assessment to properly sort, catalog, and store artifacts. A collection manager may oversee the registrar, archivist, curator, photographer, or other collection professionals, and may assume the responsibilities of these roles in their absence within an organization.
An art handler, also sometimes called an art preparator, is a trained individual who works directly with objects in museums, art galleries and various other venues including private collectors, corporate art collections, public art collections and various other institutions. Art handlers work in coordination with registrars, collection managers, conservator-restorers, exhibition designers, and curators, among others, to ensure that objects are safely handled and cared for. Often they are responsible for packing and unpacking art, installing and deinstalling art in exhibitions, and moving art around the museum and storage spaces. They are an integral part of a museum and collections care.
Collections management involves the development, storage, and preservation of cultural property, as well as objects of contemporary culture in museums, libraries, archives and private collections. The primary goal of collections management is to meet the needs of the individual collector or collecting institution's mission statement, while also ensuring the long-term safety and sustainability of the cultural objects within the collector's care. Collections management, which consists primarily of the administrative responsibilities associated with collection development, is closely related to collections care, which is the physical preservation of cultural heritage. The professionals most influenced by collections management include collection managers, registrars, and archivists.
A museum/library/archival registrar is responsible for implementing policies and procedures that relate to caring for collections of cultural institutions like archives, libraries, and museums. These policies are found in the museum's collections policy, the guiding tenet of the museum explaining why the institution is in operation, dictating the museum's professional standards regarding the objects left in its care. Registrars focus on sections that include acquisitions, loans, exhibitions, deaccessions, storage, packing and shipping, security of objects in transit, insurance policies, and risk management.
"Found in collection" (FIC) is a term used by a museum to refer to "undocumented objects that remain without status after all attempts to reconcile them to existing records of permanent collection and loan objects are completed". Despite the best efforts of museum staff, museums often have FIC items. This term was developed so that collections with incomplete provenance would be handled ethically and with transparency. Depending on the paperwork and information accompanying the material, the museum has several choices in how to proceed.
The documentation of cultural property is a critical aspect of collections care. As stewards of cultural property, museums collect and preserve not only objects but the research and documentation connected to those objects, in order to more effectively care for them. Documenting cultural heritage is a collaborative effort. Essentially, registrars, collection managers, conservators, and curators all contribute to the task of recording and preserving information regarding collections. There are two main types of documentation museums are responsible for: records generated in the registration process—accessions, loans, inventories, etc. and information regarding research on objects and their historical significance. Properly maintaining both types of documentation is vital to preserving cultural heritage.
A textile conservator is a conservator-restorer charged with the care, treatment, research, and preservation of textiles. Issues addressed by a textile conservator are generally related to the field of textile preservation, and include damage caused to textiles by: light, mold and mildew, insects, cleaning, surface cleaning, washing, mounting for display, and storage. Variations in textile types and "the diversity of the textile conservator's work makes it a very rewarding profession". Textiles are among the most fragile artifacts, as they are susceptible to damage from atmospheric pollutants, moisture, biological organisms, and environmental changes and care varies with size, shape, material, and condition issues, all of which a textile conservator must be well versed.
A Collections Management System (CMS), sometimes called a Collections Information System, is software used by the collections staff of a collecting institution or by individual private collectors and collecting hobbyists or enthusiasts. Collecting institutions are primarily museums and archives and cover a very broad range from huge, international institutions, to very small or niche-specialty institutions such as local historical museums and preservation societies. Secondarily, libraries and galleries are also collecting institutions. Collections Management Systems (CMSs) allow individuals or collecting institutions to organize, control, and manage their collections' objects by “tracking all information related to and about” those objects. In larger institutions, the CMS may be used by collections staff such as registrars, collections managers, and curators to record information such as object locations, provenance, curatorial information, conservation reports, professional appraisals, and exhibition histories. All of this recorded information is then also accessed and used by other institutional departments such as “education, membership, accounting, and administration."
Deaccessioning is the process by which a work of art or other object is permanently removed from a museum's collection to sell it or otherwise dispose of it.
The exhibition of cultural property is a practice used by organizations where collected objects are put on display to the public. The objects are carefully chosen and placed together to offer educational value, and often to tell a story.
Conservation-restoration of bone, horn, and antler objects involves the processes by which the deterioration of objects either containing or made from bone, horn, and antler is contained and prevented. Their use has been documented throughout history in many societal groups as these materials are durable, plentiful, versatile, and naturally occurring/replenishing.
The conservation and restoration of performance art is the process of documenting, collecting, and prolonging the life of Performance Art. Performance Art often features a live presentation initially documented by an artist, cultural institution, or host location. This genre of art can take place in a wide range of mediums, and is usually based on four core elements: Time, Space, the Performer's body, and the relationship between viewers and performer. These variables determine how it can be collected and conserved within museums or cultural institutions.
The Conservation of South Asian household shrines is an activity dedicated to the preservation of household shrines from South Asia. When applied to cultural heritage, held by either museums or private collectors, this activity is generally undertaken by a conservator-restorer. South Asian shrines held in museum collections around the world are principally shrines relate to Hindu, Jain, or Buddhist households. Due to their original use and sacred nature, these shrines present unique conservation and restoration challenges for those tasked with their care.
The 'ten agents of deterioration' are a conceptual framework developed by the Canadian Conservation Institute (CCI) used to categorise the major causes of change, loss or damage to cultural heritage objects. Also referred to as the 'agents of change', the framework was first developed in the late 1980s and early 1990s. The defined agents reflect and systematise the main chemical and physical deterioration pathways to which most physical material is subject. They are a major influence on the applied practice of conservation, restoration, and collection management, finding particular use in risk management for cultural heritage collections.