Census of Agriculture: 1840
Library Holdings:Data is contained within the 1840 Census of Manufactures publications.
The 1997 Census of Agriculture's introduction contains a history of the census.
1992 census of agriculture. Volume 2, Subject series
Pt. 4. History
[Washington, D.C.] : Bureau of the Census
HD1769.A3 1992 v.4 - find in the library