Morton Gneiss

Morton gneiss (pronounced “nice”), named for the town in Renville County where it has been quarried, is one of the oldest stones on the planet: about 3.5 billion years old. It is known for its beauty as an ornamental stone in buildings and monuments.

Color image of the 3M Post-it Note fan board for the World Series, 1991.

3M Post-it Note fan board for World Series

During the 1991 World Series, fans wrote notes to the Twins on Post-its that were added to a large mural.

Black and white photograph of Arthur Fry inspecting his product, the Post-it Note, ca. 1980.

Arthur Fry inspecting his product, the Post-it Note

Arthur Fry inspecting his product, the Post-it Note, ca. 1980.

Color image of an early version of a Post-it Note, 1986.

3M Post-it Notepad

An early version of a Post-it Note, 1986.

Post-it Notes

Introduced to the public in 1980, the Post-it Note has become one of the Minnesota-based 3M Company’s most successful products.

Black and white photograph of Frances E. Andrews at a National Audubon Society dinner, 1954.

Frances E. Andrews at a National Audubon Society dinner

A president of the National Audubon Society (likely John H. Baker) presents a citation to Frances E. Andrews of Minneapolis for her contributions to conservation at the Society's annual dinner in New York City, November 20, 1954. From the Minneapolis Star Tribune portrait collection in the Minnesota Historical Society Library.

Black and white photograph of Frances E. Andrews (second from right) and others, ca. mid-1950s. Used with the permission of the Hunt Hill Audubon Society.

Frances E. Andrews (second from right)

Frances E. Andrews (second from right), ca. mid-1950s. Used with the permission of the Hunt Hill Audubon Society.

Black and white photograph of Frances E. Andrews (far right) and two other women, ca. mid-1950s.

Frances E. Andrews (far right), ca. mid-1950s

Frances E. Andrews (far right), ca. mid-1950s.

Black and white photograph of Frances E. Andrews, ca. mid-1950s.

Frances E. Andrews, ca. mid-1950s

Frances E. Andrews, ca. mid-1950s. Used with the permission of the Hunt Hill Audubon Society.

Black and white photograph of Frances E. Andrews, ca. 1907. From the Ernest Oberholtzer papers, Manuscript Collection, Minnesota Historical Society.

Frances E. Andrews, ca. 1907

Frances E. Andrews, ca. 1907. From the Ernest Oberholtzer papers, Manuscript Collection, Minnesota Historical Society.

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