1840 Websites:
censusmate.com
CensusMate - Census worksheet for genealogy and family history
Use this TimeLine Format to find ages, names, and birthdates from 1800 to 1850 US Census Data
spvhs.org
South Platte Valley Historical Society - South Platte Valley Historical...
The South Platte Valley Historical Society's historic park contains a reconstruction of an early western fur trade fort and restored mid-1800 buildings. Fur trade rendezvous...