Welcome to WikiTree! Sounds like you will be busy attaching your people to the big family tree. If this is your Lafayette Ritchey, you can attach this source to his profile when you get there.
"United States Census, 1870," database with images, FamilySearch(https://familysearch.org/ark:/61903/1:1:M46J-6KJ : 17 October 2014), Lafayette Richie, Missouri, United States; citing p. 30, family 204, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,288.
Good luck with your research. I hope you enjoy WikiTree. -NGP