How should the TYPE attribute be interpreted/applied to <unitdate>. Are we describing the date or the material?  Examples:

a folder with multiple items all from the year 1924. TYPE = "single" or "inclusive"

a folder with multiple undated items. TYPE = "single" or "inclusive"

<unitdate normal = "1800/1900">[18--]</unitdate>
1 single item. TYPE = "single" or "inclusive"

<unitdate>ca. 1920/1925</uitdate>
1 single item. TYPE = "single" or "inclusive"

We can find no guidance in Tag Library, OAC BP, RLG BP, etc.

Jocelyn Gibbs
Head, Special Collections Cataloging
Research Library, The Getty Research Institute
1200 Getty Center Dr., Suite 1100
Los Angeles, CA 90049-1688
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