At NOAO/Tucson the various sky surveys are not kept in or kept by the Library. Instead, the person who is responsible for their acquisition, care, handling and preservation, is someone whose area of expertise is scientific photography and instrumentation, and he has given me the information that follows.

At NOAO we have a very complete set of the sky surveys. In Tucson we have one set of the Palomar survey on print and one on glass, the ESO/SRC southern atlas, red and blue, on glass and film, the SRC infrared atlas on film, the SRC equatorial atlas on glass, the ESO quick blue survey on glass, and original KPNO telescope plates on glass. At the observatory on Kitt Peak there are two sets of the Palomar survey on print. Basically, all of these can be divided by format into three kinds: paper print, film, and glass. I will tell briefly what we do with each.