https://www.astroleague.org/the-astronomical-league-convention-planning-check-lists/
The Astronomical League Convention Planning Check Lists - Astronomical League
Feb 16, 2024 - Forward Eighteen Months or More Twelve to Eighteen Months Six to Twelve Months Less Than One Month to Three Months One Week or Less During the Convention After...
the astronomical leagueconvention planningchecklists