Sponsors of TVIW for 2018 We thank the generous sponsors, supporters, and friends of the TVIW who have gotten us this far with their time and money. Originally sponsored by the Ultimax Group, Inc., we appreciate the 2018 support of: Interstellar Level: Baen Books, Science Fiction Publisher Rob & Ruann Hampson C.S.Engineering, Inc. Interplanetary Level: The Vershall Roy Trust Synchronous Level: Robert Bufe Richard Wallace We also thank our many previous sponsors and friends in previous TVIW Conferences: British Interplanetary Society Centauri Dreams blog International Space University Barbara Jackson and Robert Kennedy Carol and Les Johnson Martha Knowles and Ken Roy John Preston The Starship Vlog