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----------------------------Original message---------------------------- Hello, I'm hoping a fellow librarian or curator might be able to help me identify a classification system. Our architecture library uses a classification system to arrange our architecture slide collection. The system was set up a long, long time ago by someone who's no longer with us. I don't think it was a homemade system; I suspect it was copied from someone else. But, in looking through the literature on slide classication systems, I'm not able to recognize it. I'm hoping someone on this list might recognize the system we're using. What is the name of the system? Where/by whom was it developed? When? Who else/what other libraries are using it? And, what literature might be available on the system (new schedules for, pros and cons of, software for, etc.). Any given slide might have a call number that looks like this: A190.1-LONho The first letter is the main class (see list of main classes below). The following number is the sub-class. After the dash is three letters in caps that represent the location or designer (in the example above, LON is for London) and then two lowercase letters for the title. The main class scheme is: A: Architecture B: Building construction C: City and human environment D: Design concepts L: Landscape design M: Minor arts and industrial design MA: Graphics MB: Textiles MBB: Wallpaper MBC: Fashion design MBD: Leatherwork MC: Furniture MD: Photography MEA: Caligraphy MF: Vehicles MFA: Land vehicles MFB: Water vehicles MFC: Air vehicles MG: Ceramics and glassware MH: Machinery MJ: Recreational equipment MJA: Toys MJB: Sports equipment MK: Metalwork and jewelry MKA: Jewelry MKB: Precious metals MKC: Ironwork MKD: Misc. metals MKE: Coins and medalions ML: Household objects MN: Musical and scientific equipment MN: Misc. objects MO: Mosaics N: Natural environment P: Painting S: Sculpture Most of our collection is in the A: Architecture class. That is further subdivided like: ANTIQUITY A1: Prehistoric A2: Precolumbian A3: Egyptian A4: Ancient Near East A5: Aegean A6: Greek A7: Etruscan A8: Roman A9: Ancient Europe MEDIEVAL A10-29: Early Christian A30-49: Byzantine A50-69: Pre-Roman A70-89: Romaneque A90-109: Gothic RENAISSANCE to NINETEEN CENTURY A110-129: Renaissance A130-149: Baroque-Rococo A170-189: Nineteenth Century MODERN A190: Twentieth century etc., etc., etc. Does this sound familiar to anyone? Thanks in advance for the assistance. --Jim Robertson, Technical Reference Librarian and Acting Architecture Librarian New Jersey Institute of Technology [log in to unmask]