IBM Rochester from the air in the late 1950s
An aerial view of the IBM's facility in Rochester, Minnesota sometime between 1956 and 1958. This appears to be looking roughly west-northwest. The sign that faces toward U.S. Highway 52 can be seen in the bottom right. Cropped version of original photo by Balthazar Korab, via the Library of Congress.
Source for original: www.loc.gov/pictures/item/krb2008000486/