ABOUT US Pattillo, Brown & Hill. At Pattillo, Brown & Hill, L.L.P., our continued success is a direct result of our client’s accomplishments. Our longevity is exclusively a product of our top-notch team, consisting of innovative thinkers, critical problem solvers and dedicated partners who easily provide a clear and comprehensive plan for your financial achievement. PB&H has been pace setter within the Waco, Texas community since its inauguration in 1923 and continues to be one of the oldest and most respected accounting firms in the Southwest.