History JGI Outdoor Advertising
Mr. John P. Gannon, the owner of JGI Outdoor Advertising, has been in the billboard business for over thirty years. In 1994, John began JGI Outdoor with an acquisition of forty billboards. Well, by December 2002 those forty billboards had quickly turned into over seven hundred billboards in Houston and its surrounding areas, along I-10 from Houston to San Antonio, and along the I-35 corridor between, in, and around the cities of New Braunfels and San Marcos. JGI Outdoor continues to grow through new billboard sites, relocations and acquisitions.