Com or call 512-427-1806. The Online Membership Directory provides basic information about Attorneys licensed to practice in Texas.Are you an Arizona attorney? Log in here to see additional member profile details. We are a public law library. Please visit the State Bar of Texas website texasbar. Attorney Jon Clark has represented people in commercial trucking cases, significant motor vehicle and motorcycle crashes and serious workplace injuries. Mark Clark has successfully provided leadership to his clients in litigated matters for over 29 years. In 1927, Clark went to work as a civil attorney in the Dallas County District Attorney's Office, working there until 1932, when he returned to private practice. Out-of-state law teachers, to prepare bar examina- tion questions, and it may also use the services of the National Conference of Bar Examiners.