South Side School Classroom 4th Grade Class, 5th Grade Class, 6th Grade Class. Material: paper. Size: 5 1/8" x 3 1/8". Description: black and white postcard photograph of a classroom in South Side School, Waseca, Minn., c. 1910; unidentified students and teacher; a view of students seated at wooden desks, blackboards, U.S. flag, portrait of George Washington; "Fourth, Fifth, and Sixth Grades" Southside School.