Edna Westbrook Trigg (1868-1946) was the first county home demonstration agent appointed in Texas in 1915, serving in Denton County from February 1916 through December 1937. She was named Denton County home demonstration emeritus from January 1, 1938, until her retirement on July 31, 1945. Previously in Milam County, she served as rural high school principal and "collaborator" for the United States Department of Agriculture as supervisor of Girls Tomato Clubs.

Trigg traveled throughout Denton County teaching and advising farm women on vegetable gardening, canning, sewing, cooking, household management and other aspects of daily life. She had to overcome prejudices against government's interference in farming and a woman's interference in a man's work and home life. During World War I, she helped make the county agriculturally self-sufficient by working with farmers to grow more vegetables, attended patriotic meetings three nights a week urging people to purchase Liberty Bonds and held Saturday canning schools to show rural residents how to properly preserve and protect the food they grew. She convinced county commissioners to loan her $350 to purchase twenty community steam canners for use in the precincts. The Hawkeye Demonstration Club, organized in 1919 in the now extinct community of Hawkeye, owned the first community canner.