Minn. Stat. § 256.87
(8688-21, 8688-22, 8688-23) 1937 c 438 s 19-21; 1953 c 639 s 3; 1977 c 282 s 1; 1980 c 408 s 1; 1981 c 360 art 2 s 21; 1983 c 308 s 2; 1984 c 547 s 2; 1985 c 131 s 3, 4; 1Sp1985 c 9 art 2 s 32; 1988 c 593 s 1-4; 1989 c 282 art 2 s 114; 1993 c 340 s 3-6; 1994 c 630 art 11 s 4; 1995 c 257 art 4 s 2; 1997 c 203 art 6 s 6-10; 1997 c 245 art 1 s 3; 1999 c 245 art 7 s 2; 2005 c 164 s 29; 1Sp2005 c 7 s 28