The daguerreotype is an early type of photograph. Unlike modern photographs, the daguerreotype had no negative. Instead, the image was exposed directly onto a mirror-polished surface of silver, which had previously been exposed to idonine vapour. In the later use of the process, bromine vapour was employed. The finished daguerreotype was usually housed in a velvet-lined folding case.
Faded by the passage of time, many of these daguerreotypes possess a ghostly, haunting quality, perfectly in keeping with McCarthy's themes of transience and mortality.