0000897101-98-000296 DEF 14A 1 19980422 19980320 NYSE NORTHERN STATES POWER CO /MN/ 0000072903 4931 410448030 MN 1231 DEF 14A 34 001-03034 98569524 414 NICOLLET MALL 4TH FL MINNEAPOLIS MN 55401 6123305500 414 NICOLLET MALL 4TH FLOOR MINNEAPOLIS MN 55401 DEF 14A 1 000089710198000296-001-seq1-def-14a.txt