Burlington Northern Class SD45 Number 6560, built December 1971; SD45 Number 6403, (former Northern Pacific Number 3603); an SD45, number unknown; and an SD40-2, number unknown; passing Hoffman Avenue interlocking at Dayton's Bluff, Minnesota with an eastbound freight on April 24, 1981. Photo by Al Christianson.

Burlington Northern Class SD45 Number 6547, built November 1971; SD45 Number 6557, built December 1971; SD40-2 Number 8147, built July 1980, and an SD40-2, number unknown; with a piggyback freight at Dilworth, Minnesota on March 14, 1981. Photo by Al Christianson.

Burlington Northern Class SD45 Number 6491, built August 1970; SD40-2 Number 6366, built November 1976; passing Newport interlocking at Newport, Minnesota on April 6, 1981. Photo by Al Christianson.

Burlington Northern Class SD45 Number 6408, (former Northern Pacific Number 3608); SD40-2 Number 6763, built November 1976; an SD40-2, number unknown; and an SD40-2, number unknown; passing Hoffman Avenue interlocking at Dayton's Bluff, Minnesota with an eastbound freight on December 4, 1980. Photo by Al Christianson.

Burlington Northern Class SDP40 Number 6394, (former Great Northern Number 320); SD45 Number 6483, built August 1970; SD40-2 Number 8130, built June 1980; at grade crossing in Breakenridge, Minnesota with a freight on March 11, 1981. Photo by Al Christianson.

Burlington Northern Class SD40-2 Number 6383, built April 1974; SD45 Number 6419, (former Northern Pacific Number 3619); moving through Irving, Texas with a freight on September 16, 1979. A Northern Pacific plug door boxcar is the second car. Photographer unknown.

Burlington Northern C30-7 Number 5088, built April 1980; C30-7 Number unknown; SD40-2 Number unknown; with unit train of Burlington Northern hoppers at unknown location on August 23, 1981. Photo by Al Christianson.

Burlington Northern C30-7 Number 5028, built March 1980; C30-7 Number unknown; SD40-2 Number unknown; U30C Number unknown; with southbound coal loads at Fort Worth, Texas on May 31, 1981. Photo by Al Christianson.

Burlington Northern C30-7 Number 5028, built November 1979; C30-7 Number 5082, built April 1980; C30-7 Number 5038, built November 1979, SD40-2 Number 7255, built February 1980; Santa Fe SD40-2 Number unknown; Santa Fe SD40-2 Number unknown; with southbound coal loads at Palmer Lake, Colorado on September 6, 1981. Photo by Al Christianson.

Burlington Northern GP40 Number 3028, former Burlington Number 628; GP40 Number 3002, former Burlington Number 172; SD7 Number 6051, former Burlington Number 403; passing Newport interlocking in Newport, Minnesota with eastbound freight on December 1, 1980. Photo by Al Christianson.