University of Minnesota historian Hyman Berman and colleagues in 1964 during Berman's first international teaching experience, at Osmania University in Hyderabad, India. CC BY-SA 3.0

Hyman Berman in one of his first teaching positions, in New York—likely at the City College of New York—ca. early 1950s. CC BY-SA 3.0

Hannah Jensen with her students in School District 187, Friberg, ca. 1899. Otter Tail County Historical Society, Fergus Falls.

Tenth- and eleventh-grade students with a teacher at the Heart of the Earth Survival School in Minneapolis. From the 1982–1983 edition of Chimigezi Winage (the school's yearbook), page 11.

Students with the drum used in their drum circle at the Heart of the Earth Survival School, Minneapolis. From the 1982–1983 edition of Chimigezi Winage (the school's yearbook), page 43.

Wild-ricing educational activities organized by the Heart of the Earth Survival School. From the 1982–1983 edition of Chimigezi Winage (the school's year book), page 36.

Activities at the Heart of the Earth Survival School in Minneapolis. From the 1982–1983 edition of Chimigezi Winage (the school's yearbook), page 36.

Students at the Heart of the Earth Survival School in Minneapolis. From the 1982–1983 edition of Chimigezi Winage (the school's yearbook), page 33.

Pre-school and kindergarten students on Hat Day at the Heart of the Earth Survival School in Minneapolis. From the 1982–1983 edition of Chimigezi Winage (the school's yearbook), page 32.