Guide to the Spring Flowers of MinnesotaFrederic E. Clements, Carl Otto Rosendahl, Frederic King Butters · First published 2018Open the Tome
Minnesota Trees and ShrubsFrederic E. Clements, Frederic King Butters · First published 2018Open the Tome
Ferns and Fern Allies of MinnesotaCarl Otto Rosendahl, Frederic K. Butters · First published 1954Open the Tome
Guide to the Spring Flowers of MinnesotaCarl Rosendahl, Frederic Butters · First published 1937Open the Tome
J. Arthur Harris, Botanist and BiometricianCarl Rosendahl, Frederic Butters · First published 1936Open the Tome
