The IRS may require an organization to provide additional information necessary to clarify the nature of your organization. Some examples are: Representative copies of advertising placed, Copies of publications, such as magazines, Written material used for expressing views on proposed legislation and Copies of leases, contracts or agreements into which the organization has entered. Return to life cycle of a social welfare organization Return to life cycle of a labor organization Return to life cycle of an agricultural or horticultural organization Return to life cycle of a business league (trade association)