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Manuscript

Increase Lapham letter

Date: 06 28 1850
Description: Letter from Increase Lapham to his wife, Ann Maria Alcott, in Milwaukee. Lapham was at Aztalan and wrote to Anna regarding the geology of the region. He in...
Drawing

Geological Profile from the Sandusky Plains to Portsmouth

Date: 12 22 1830
Description: Increase Lapham's drawing of the geological profile between the Sandusky plains and Portsmouth, Ohio.
Map or Atlas

Sections of the Blue Mounds: Section Through the Line A.B. Showing the Denudation Apple River to Mineral Point Branch

Date: 1864
Description: This map is pen and watercolor on paper and shows a profile and geological sections of the Apple River, Little Otter Creek, Woods' Branch, Bonners' Branch,...
Map or Atlas

Sections of the Blue Mounds: Section Through the Line A.B. Showing the Denudation E. Blue Mound Br. to the Wisconsin River

Date: 1864
Description: This map is pen and watercolor on paper and shows a profile and geological sections of the Blue Mounds, Hollow Run, Bogies Hollow Run, Bear Creek, East Bre...
Map or Atlas

Sections of the Blue Mounds: Section Through the Line A.B. Showing the Denudation Spensley Br. to Little Bear Creek

Date: 1864
Description: This map is pen and watercolor on paper and shows a profile and geological sections of the Spensley Break, James Break, Wisconsin River, and Little Bear Cr...
Map or Atlas

Sections of the Blue Mounds: Section Through the Line A.B. Showing the Denudation E. Blue Mound Br. to the Wisconsin River

Date: 1864
Description: This map is pen and watercolor on paper and shows a profile and geological sections of the East Blue Mound Break, Blue Mound Creek, Black Earth River, and ...

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