The Northern Pacific's secondary transcontinental passenger train was the Alaskan, until it was replaced by the Mainstreeter on November 16, 1952. The Mainstreeter, which operated via Helena, Montana and Mullan Pass, continued in service through the Burlington Northern merger until Amtrak Day (May 1, 1971). It had been reduced to a Saint Paul to Seattle train after the last run of the former Burlington Route Black Hawk on April 12-13, 1970.