[To Parent Directory] 8/3/2006 2:52 PM 301033872 allegheny_1956_index_1.tif 8/3/2006 2:53 PM 301871392 allegheny_1956_index_2.tif 8/3/2006 3:36 PM 301747972 allegheny_1956_index_3.tif 8/3/2006 4:32 PM 301565632 allegheny_1956_index_4.tif