The two most important events in the League Biennium are the convention (held during odd-numbered years) and council (even-numbered years). These events are essentially the annual meetings of the organization. At these times the official business is carried out in accordance with the requirements of being a not for profit organization. Programs, concurrences, positions adopted, Board members elected, and other business of the League are carried out. The materials for these meetings, sent out in advance, are official documents that show what took place. The last two bienniums are available for reference purposes.