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Hello, helpful Map Experts,
 
We have a question about retention of the BLM 1:100 000 maps
(Surface/Surface Mineral Management Status) that we never
seem to resolve.  When you get sheets that are just more recent
printings of editions you already have (not new editions,
but apparently just recent reprints), do you keep all of the
printings or only the most recent?   Thanks for your advice!
 
Jane Carlson
Map Collection Assistant
University of Iowa