My background is in photo archives and geologic archives... Why do you apparently routinely duplicate newly received archival collections? You say, "a new archeological collection was accessioned without duplicated records..." Do you duplicate them on archival/acid-free buffered paper? From your question, it doesn't sound like your speaking about a collection which is water-damaged, etc. which you might have to copy and then discard the moldy originals, etc. Inquiring minds are curious.... Carol Edwards, Head USGS Field Records Library Denver, CO [log in to unmask]