Publisher
- Homestead Heater Company1
- Hooks-Epstein Galleries1
- Houck, Harvey Roy, Jr.1
- Houston Festival Foundation, Inc.1
- Houston Fire Department1
- Houston Home Builders Association1
- Houston Labor Journal1
- Houston National Bank1
- Houston Negro Hospital1
- Houston Novelty Co.1
- Houston Sports Association1
- Houston Women's Caucus for Art1
- Houston-Stavanger Sister City Society1
- Howe & Wise Consulting Engineers1
- Hughes Press1
- Hyperion Books1
- Inabnit, Mark1
- Institute for World Order1
- International Bookshops1
- International Review Publications1