Collection of 10 Cased Photos
Submitted by: Sarah
Why is this item important to you?: These photos include my 5x great grandmother, 2-3 of her sons, and my great great grandmother.
Expert Advice (Todd Pattison): The photographs are housed in the original cases, which are composed of wood, leather, metal, velvet and sometimes cloth. Some of the images are missing the upper cover of the cases while others have upper covers that are detached. Seven of the images are daguerreotypes, which is the earliest type of commercially available photograph and was widely used in the 1840s and 1850s. Daguerreotypes can sometimes be dated at least generally by the case and gold mat over the photograph. For instance, Wardwell3 has what appears to be an earlier type of mat, which is less decorative than some of the later ones. In addition, the daguerreotype process was used to copy miniatures and small painted portraits, which appears to be the case with Wardwell_Lydia1. This may have been taken after her death, when it was not possible to take a living photo, but it might also have been done to provide a copy for someone who wanted it. The other three photographs appear to be ambrotypes, which were first introduced a little after the daguerreotype, but the two processes overlapped with ambrotypes being most popular in the 1850s and 1860s. A daguerreotype is a photo on silver plated copper while the ambrotype is a photo on glass. Daguerreotypes used glass to protect the photo so both types of cased images include glass. Glass is an amorphous solid, so it is somewhat between a liquid and a solid. While most glass is very stable it can also break down over a long time period. There is spotting on the glass of some of the daguerreotypes; for instance, Wardwell8 has spotting on the glass covering the image, as well as tarnishing on the silver at the edges. Silver tends to tarnish when it comes into contact with oxygen; the cases included seals when constructed to prevent oxygen from getting at the plate so this may be caused by a break in the seal. Recommendations: The glass on the daguerreotypes can be replaced, an option being borosilicate glass, which is much more stable than regular glass. A photograph conservator, preferably one who is a member of the American Institute for Conservation (AIC) and has experience treating daguerreotypes, could replace the glass and examine the photographs for possible treatment, although they seem to be in good condition. One issue to consider are the original seals, if they are still intact you may want to not disturb those but if seals are broken, which is quite possible in the images with tarnish at the edges, replacing the glass would be a good option. There is a Find a Conservator page on the AIC website that allows you to search for a conservator by specialty and location. If the daguerreotype is removed from the case to check seals and replace the glass it should be professionally imaged at that time as you would get the best image capture. There are specific techniques for imaging daguerreotypes to counter act the mirroring you normally get in a photo. The daguerreotypes would also need to be resealed and put back in the cases afterwards for protection. The ambrotypes, being directly on glass, do not allow for the glass to be replaced but they can also be examined for any issues not showing up in the photos submitted. Also, it appears as if Wardwell_Lydia2 may have an issue with the black background that is used to make the underexposed “negative” of an ambrotype appear as a positive image. A conservator could add a black piece of paper behind the image to create greater contrast and improve the viewing of the image. A conservator could also reattach some of the covers that are now detached if this is of interest. Storage and Handling: You mention that the case images are currently being stored in an archival box, but you will get individual boxes made for them. There are some boxes made for cased images from some commercial archival suppliers, but you can also have ones constructed specifically for your photographs. The key is to protect the glass with rigid boxes as glass can be fragile.