Archaeological crew and mechanical equipment near the Round Tower, 1958.

The Round Tower covered in vegetation, c.1942. Photographed by Norton and Peel.

Interior of the Round Tower Museum, 1941.

View of round tower, 1936. Photographed by A.F. Raymond.

View of Round tower covered in vegetation,1935. Photographed by Norton and Peel.

View of Round Tower covered in vegetation,1915. Photograph by C. J. Hibbard.

Round Tower postcard, c.1910.

Round Tower postcard, c.1905.

Reunion of First Minnesota Volunteer Infantry Regiment, posed in front of Round Tower, 1902.

Men and women with parasols standing atop the round tower, c.1900.