The largest oil reserves in the U.S. were found in 1968 near this bay on the Arctic coast
[DOC] [TLE] national petroleum reserve in alaska - USGS Publications Warehouse [PAR] May 10, 1980 ... Oil seepages along the Arctic coast were reported in the early 1900's ... the 
federal government and industry continued, culminating in 1968 in the discovery 
of North America's largest oil field at Prudhoe Bay.