Below are links to other web sites. These sites contain further information on other family branches mentioned in "The Thoma Family Web Page". We wish you the best of luck in your search. 
Lorenz George Thomae immigrated from Hofstaedten Germany to Boonville, Cooper County, Missouri in 1854. As a result, "The Thoma Family Web Page" contains information on a large number of Cooper Countians. This link will take you the Cooper County page of the MoGenWeb; where you will find additional information on Cooper County, Missouri.
Jurgen Halder's surname list contains many Thoma and Thomae families from Germany. Although no connection has been made between the two branches; a future connection looks possible.
The ancestors and relatives of Erven Thake Thoma resided mainly in St. Louis and Kansas City, Missouri. At this time no link can be found between the Thoma families of Missouri. However, the two families can be found intermixed in St. Louis in the present age. The researcher for this Thoma family is Erven Thake Thoma
Information on Benjamin C. Simmons listed on this site and the link to Brenda Lea Simmons Johnston's family page should be close to identical as it is the same family.
The Mechling Historical Association is open to the descendants of Theobald and Jacob Mechling, who came to America in 1728, as well as to anyone interested in this surname and its variants: Mechlin, Macklin, Machlin, Meckling, Mackling, Maechling.