NEBRASKA

1915 Type 1, 1916 Types 1-2:        Greenduck

1915 Type 2:                        Brown & Saenger

1916 Type 3, 1917-18, 1919 Type 1:  Adams

1919 Type 2, 1920 Tab:              Grimm

1921:                               ?

1922-24, 1926-27:                   Adams

1925:                               Automatic Vehicle

1928-29:                            Gopher

1930:                               Adams

1931-32:                            Grimm

1933-on:                            Nebraska Prison

1984 Type 5:                        Iowa Prison

1991 Type 2:                        South Dakota Prison