First Geological Survey of Michigan, 1837–1840, Douglass Houghton, State Geologist; Abram Sager, Botanist and Zoologist, 1837; John Wright, State Botanist, 1838, assisted by George H. Bull [The pencil label is thought to be the work of an herbarium assistant, ca. 1870.] [Coordinates at Jct. Main Street and Huron St.]