[2] [3][4] NASA astronaut Kjell Lindgren participated from Earth orbit as Sasquan's Special Guest while aboard the International Space Station.

[6] Kevin Roche was the master of ceremonies and the judges were Brad W. Foster, David Gerrold, Sandy Pettinger, Kathy Sanders, and Syd Weinstein.

[15][16][17] After the "Spokane in 2015" bid chaired by Alex von Thorn[19] won the site selection vote, Sally Woehrle and Bobbie DuFault were announced as co-chairs of the convention on behalf of the Seattle Westercon Organizing Committee.

[21][22] The convention announced that Sally Woehrle would serve as chair with Glenn Glazer, Pierre Pettinger, and Mike Willmoth as vice-chairs.

[30] Four committees announced bids to host the 75th World Science Fiction Convention and filed all of the required paperwork by the February 2015 deadline: "Nippon in 2017", "Montréal in 2017", "Helsinki in 2017", and "Washington D.C. in 2017".

[31] The 2017 site selected by the voters was announced during the convention's third World Science Fiction Society business meeting, on Saturday, August 22, 2015.