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LCCN n 79-18774
LCCN n 86140996
LCCN sh 85-26371
  (1-3 character alphabetic prefix)
  (assigned before 1/1/2001)
n79018774
n86140996
sh85026371
  -- Omit spaces and hyphens.
  -- Make sure your LCCN is 9-11 characters long:
      Four numbers (representing a year) followed by six serial numbers.
      Add leading zeros if there are fewer than six serial numbers.
LCCN n 2011033569
LCCN no2007000685
LCCN sh2006006990
LCCN gf2011026169
  (1-2 character alphabetic prefix)
  (assigned after 12/31/2000)
n2011033569
no2007000685
sh2006006990
gf2011026169
  -- Omit spaces and hyphens.
  -- Make sure your LCCN is 11-12 characters long:
     Four numbers (representing a year) followed by six serial numbers.
     Add leading zeros if there are fewer than six serial numbers.