| Date | Description |
|---|---|
| 2017-11-25 | delete address the 2015 Winter Simulation Conference, Huntington Beach, CA |
| 2017-11-25 | update primary_contact the 2015 Winter Simulation Conference, Huntington Beach, CA => null |
| 2016-07-16 | insert address the 2015 Winter Simulation Conference, Huntington Beach, CA |
| 2016-07-16 | update primary_contact null => the 2015 Winter Simulation Conference, Huntington Beach, CA |