Dataset originally downloaded at wget http://thor-f5.er.usgs.gov/sdts/datasets/tvp/dlg3/24K/martin_point/D3607551_rd0s_1_sdts.tar.gz

This is an extract to make it small.

The following files have been removed as unncesseray for the OGR SDTS driver :
 3961  TR01CATS.DDF
 4709  TR01DDSH.DDF
 1177  TR01DQAA.DDF
  983  TR01DQCG.DDF
 3637  TR01DQHL.DDF
 2369  TR01DQLC.DDF
 2202  TR01DQPA.DDF
 1629  TR01STAT.DDF

And the following files have been truncated to be smaller : (original size below)
 41420 TR01LE01.DDF
 11684 TR01NO01.DDF