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Technical details[ edit ] There are two historic tintype processes: In the wet process, a collodion emulsion containing suspended silver halide crystals had to be formed on the plate just before it was exposed in the camera while still wet. Chemical treatment then reduced the crystals to microscopic particles of metallic silver in proportion to the intensity and duration of their exposure to light, resulting in a visible image. The later and more convenient dry process was similar but used a gelatin emulsion which could be applied to the plate long before use and exposed in the camera dry. In both processes, a very underexposed negative image was produced in the emulsion. Its densest areas, corresponding to the lightest parts of the subject, appeared gray by reflected light. The areas with the least amount of silver, corresponding to the darkest areas of the subject, were essentially transparent and appeared black when seen against the dark background provided by the lacquer. The image as a whole therefore appeared to be a dull-toned positive. To obtain as light-toned an image as possible, potassium cyanide , a very dangerous and powerful deadly poison, was normally employed as the photographic fixer.

JAIC , Volume 30, Number 1, Article 5 (pp. 41 to 73)

Eccentric in dress and with a flowing beard he vowed not to remove until the end of slavery, Burleigh turned his back on a professional career to become agent and lecturer for the Middlesex Anti-Slavery. He was a regular contributor to the Liberator and one of the editors of the Pennsylvania Freeman. He was a supportive friend of Abby Kelley.

FREE Book on Dating 19th Century Daguerreotypes, Ambrotypes, and Cased Tintypes. As family historians, we love photographs. Sometimes though we struggle to figure out who is actually in the photograph. To help us with that challenge, we often try to determine exactly when the .

This includes identifying the process that was used to make them, becoming aware of the differences in their structure and basic material components, and recognizing their inherent vulnerabilities. These requirements are outlined in the information below. Brief history of photographic materials Historical photographs come in a wide range of types and a variety of materials. A brief outline of the history of photographic materials will help explain this diversity.

In the early s, William Henry Fox Talbot, a British scientist, began experimenting with the well-known tendency of silver nitrate to blacken when exposed to light, and he succeeded in creating his first photographic image circa Talbot’s patent of for what he called the “calotype” explained the process of exposing a semi-transparent paper soaked in silver nitrate to light, developing the invisible latent image and, finally, fixing it by means of chemical treatment.

This negative image could then be printed as a positive by laying the first image in tight contact with a second sheet of sensitized paper, exposing them to light and developing the resultant image. The modern process of photography was thus born and, within the decade, both amateur and professional photography developed rapidly, particularly in the realm of portraiture. From to , Talbot published The Pencil of Nature in six parts, introducing a new genre—the photographically illustrated book.

His publication Sun Pictures in Scotland became the first example of photo-tourism. Meanwhile, in continental Europe and the United States, Talbot’s method was overshadowed by the work of Louis Daguerre. Daguerre had worked on this process since approximately After a decade of experimentation, Daguerre eventually discovered that a stable image could be made by exposing an iodized silver plate in a camera, developing the image using fumes of mercury and fixing it with salt.

Daguerreotype in ornate case

The following is offered as an introduction to preserving photographic items that may be found within family archives, genealogical and historical societies and other collections. Photographic collections can include a wide variety of photographic processes and as these require differing treatment due to the nature of the process used, it is essential to correctly identify the types of photographs in a collection.

The format of a photograph will affect how it is stored and treated; the one photographic process may include large items in original frames through to small loose photographs devoid of any original casings or mounts.

The brass mats both contain a very unique and rare profile, the likes of which I had never seen before. The profile resembles a reverse bubble cloud. The thermoplastic union case is a larger case that displays the two sixth-plate images side-by-side.

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Topics in Photographic Preservation

At the height of daguerreotype popularity in , there were reportedly 86 studios in New York City. Is it a Daguerreotype? The daguerreotype is very easily detected, even by someone who has never seen one before.

You need two referents: Ambrotype Camerapedia FANDOM powered by Wikia Dating ambrotypes varnish chipped, daguerreotype These mats chris botti and caroline campbell dating simulator of a backing sheet onto which the plate is directly adhered, covered by an aperture overmat.

The majority of the images are portraits, but the collection does include a few early architectural views, outdoor scenes, and copies of works of art. Brady, who today is mainly remembered for the work produced by his studio during the Civil War, opened his first daguerreotype studio in New York City in The Library has the largest collection of Brady studio daguerreotypes in existence.

Most of these were acquired in from the Army War College. Some of the images are copy daguerreotypes. Portrait sitters represented in the collection include political figures, such as President James K. Raymond, and James Gordon Bennett. Many of the sitters are unidentified. John Plumbe’s architectural daguerreotypes of sites in the Washington-Baltimore area are the earliest existing photographic views of buildings and monuments in the nation’s capital and its neighboring city.

Man advertising for a wife, Maine, : pics

With a Liberal Hand: Eber Brock Ward’s cunning business practices during the 19th century industrial development of the Midwest made him the wealthiest man in Michigan but sharply divided his siblings and cousins. Ward appears seated with a drawing of a Great Lakes style steamboat that strongly resembles the Huron, built in the late s by his uncle and business partner Samuel Ward at their shipyard in Newport, Michigan.

Eber Brock Ward was both Captain and co-owner of the Huron.

A tintype, also known as a melainotype or ferrotype, is a photograph made by creating a direct positive on a thin sheet of metal coated with a dark lacquer or enamel and used as the support for the photographic emulsion. Tintypes enjoyed their widest use during the s and s, but lesser use of the medium persisted into the early 20th.

There are three main factors of deterioration that affect tintypes: Here are some basic tips for how best to care for these unique documents! Do not handle the tintype or image without gloves. Cotton gloves are preferred as they will not cause an interaction with the chemicals used in the creation of the tintype. This type of photographic medium is very susceptible to damage from moisture. Keep the tintype from being stored or displayed in direct light sunlight and artificial light!

If the glass appears to be in good condition, leave it intact. Try to ensure there is a space between the glass and the tintype surface. Depending on the type of frame, you may consider contacting a framing conservator separately for further treatment.

Dating Ambrotype Photographs

While Whipple was experimenting and working as a chemist, several Boston men had already opened daguerreian studios. The competition in the city, certainly in all the eastern major population centers, was absolutely fierce. The primitive sixthplate Figure Early work at No. Written with flowing script, in ink, on the gold colored paper mat is Daguerreotype Studio, No.

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Prior to the invention of cellulose nitrate film in , photographic emulsions were made on glass supports. These glass supports are typically referred to as glass plate negatives. Both of these formats consist of a light sensitive emulsion that is fixed to the glass plate base with a binder. Dozens of photographic techniques have been used within the past years. Additionally, all photographic processes demand specific storage and exhibition considerations as well as training in the proper handling and care.

Glass plate negatives are no exception. This paper begins with a brief overview of the history of glass plate negatives beginning with their invention in the mid-nineteenth century and their usage through the first quarter of the twentieth century. The paper then explores the storage of glass plate negatives including current research on their ideal physical environment, shelving and the use of enclosures and sink mats.

The paper then discusses handling techniques including retrieval as well as common conservation concerns including the chemical breakdown of the glass, appropriate ways to deal with broken and cracked glass and the problem of image separation from the glass.

AOK Browse Photographers and Collections

This early twentieth century silver gelatin developed-out print portrays a large group of children of various ages dressed in costume. They are posed on and in front of what appears to be a stage suggesting this photograph is documenting a school or community play. The print has common forms of silver image deterioration due in part to environment and the poor quality secondary support.

The image has silver mirroring and has shifted from black image tones to more brown image tones. A closer look at this gelatin dry plate, taken around the turn of the last century, reveals the individuals portrayed in this image are in fact women. This image is not uncommon—subverting gender roles for the camera as a form of amusement was fairly popular in the late 19th and early 20th centuries.

Abstract: 78 cased photographs selected from the collections of the California State Library. Includes daguerreotypes, Includes daguerreotypes, ambrotypes, and tintypes (also called ferrotypes) dating from the late s to the mids.

A Sample of Native Stoneworks on Cape Ann Algonquian cosmology and astrology are supported by myths and legends, like the story of the three hunters chasing the sky bear and wounding it, its blood causing the leaves to turn red in fall, and the bear recovering in hibernation until the stars rise again in spring. In some versions the bear dies and its cub emerges from the den to renew the cycle of the circumpolar stars.

Other stories feature tricksters and transformers—powerful beings and culture heroes, such as Gluscap Glooskap, Kluscabi , who, along with the Great Spirit, created the earth, caused the origins of all things, kept nature in balance, and helped people adapt. Great respect was accorded to creatures able to transform themselves—shape-shifters, such as butterflies and frogs. Glooscap with the Animals, Glooscap Heritage Center, Millbrook, Nova Scotia Algonquian creation stories illustrate how the people cameto terms with a natural and supernatural world they saw as imperfect and irrational or disappointing and crazy , a conclusion completely different from that drawn by Puritans.

While possibly revealing missionary influences, the stories nevertheless contrast in other interesting ways with the Judeo-Christian origin myth represented in Genesis [11]. In the Beginning Here is an abridged version of the Algonquian creation myth in which Manito creates the world on the back of a turtle, collected by an ethnographer in The Abenaki teller of the creation story prefaced it as follows [12]: In my dream, I awakened, I turned to my side and saw the morning sun shining through a dew-covered spider web.

So beautiful it was!

How to Preserve Old Photo

The Unfinished Masterpiece of Richard Waterman Moffitt Da Lee A Portrait of the artist’s wife Hannah Maria Minton Da Lee This small profile portrait, drawn in pencil, ink, and watercolor on paper, shows the sitter in a three-quarter length pose and seated, her skirt billowing out from her body. Our eyes are drawn up from it to focus on her face, highly detailed and with a pale blush of color. She has quiet beauty and a sense of peace and dignity.

The daguerreotype was the first commercially successful photographic process () in the history of photography. Dating Old Family Photos by Men’s Clothing (Victorian) Mats Landin via the Digitalt Museum of Sweden cross-dresser carolathhabsburg: “ Victorian lady in men`s clothes.

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Dating Daguerreotypes

Early image on a thin iron plate resembling tin. By far the most common of the three for sports subjects. Early mage on a silver-coated copper plate. The rarest and most valuable for sports subjects.

I have written a comprehensive and free guide to dating early photographs, but it covers only cased images (up to ). ‘Fixed in Time’ is a guide to dating daguerreotypes, ambrotypes and tintypes by their mats and cases, for historians, genealogists, collectors and antique dealers.

Protocols and Practicalities Limited Capacity full In the 45 years since the first publication of the Oddy test by Andrew Oddy of the British Museum there has been a proliferation of methods used to perform this accelerated ageing test. The variability of testing procedures as well as subjectivity of the results are well known issues in the field.

Nevertheless, the test remains the prevalent method for evaluating exhibit, storage and packing material due to its low-cost, and easy implementation. The instructors will share their research examining the implications of various testing procedures and participants will have the chance to discuss methodologies with the goal of building consensus around a common protocol. Participants will gain hands-on experience in setting up the test properly as well as learn best practices for documenting and analyzing results.

Types of additional analysis e.

C2CC Caring for Photographs Webinar 1: Physical and Chemical Properties of Photographs