www.pasda.psu.edu - /download/era1960/allegheny_1956/allegheny_1956_index/

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  8/3/2006  1:52 PM    301033872 allegheny_1956_index_1.tif
  8/3/2006  1:53 PM    301871392 allegheny_1956_index_2.tif
  8/3/2006  2:36 PM    301747972 allegheny_1956_index_3.tif
  8/3/2006  3:32 PM    301565632 allegheny_1956_index_4.tif