Here is a list of links that you might find useful

Ancestry.com
This is the free site of Ancestry.com that bills itself as the No. 1 Source for Family History online. Some areas are by subscription only.

Cyndi's List
Thought by many to be the best and largest genealogy site on the web. Truly amazing.

Family Search
Opens the door to a vast number of data bases belonging to the Mormon (L.D.S.) Church.

Friench Simpson Memorial Library
The Hallettsville City Library has a surprisingly good collection of early Lavaca County history and genealogy.

Lavaca County, Texas
A brief history and description of the county taken from the New Handbook of Texas.

Roots Web
Texas Lavaca County

Sweet Home, Texas
A brief history and description of the community taken from the New Handbook of Texas.

sweethometx.com
Seventh grade at Sweet Home School gathering historic info.
Website for Sweet Home listing local events, general info, interviewing local people and barrowing photos to scan and preserve, etc...