The James Allen Stone Barn is a historic building located on a farm southeast of Earlham, Iowa, United States. Allen acquired in 1855, and is thought to have built this barn to house his draft stallions. The single-story, one-room structure is composed of locally quarried rubble stone. The entrance on the east side and a window on the west side both have arched openings. The interior had four stalls for the horses. Frame lean-tos were added to the north and south elevations at a later date. The barn was listed on the National Register of Historic Places in 1987.

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Infrastructure completed in 1856

Vernacular architecture in Iowa

Buildings and structures in Madison County, Iowa

National Register of Historic Places in Madison County, Iowa

Barns on the National Register of Historic Places in Iowa

1856 establishments in Iowa

James Allen Stone Barn