Alexandria, VA, 2017-Feb-08 — /Travel PR News/ — The Global Business Travel Association (GBTA), the voice of the global business travel industry, today (February 7, 2017) announced Michael Phelps will be a featured speaker at GBTA Convention 2017, July 15-19 in Boston. A conversation with Michael Phelps, one of the most decorated athletes in the history… Read the full press release