I work at a special district public library, and we are not currently a 501(c)(3). Everyone I've asked from co-workers to administration to board members says no, we aren't eligible, but no one can answer *why* we wouldn't be eligible. First, we pretty explicitly meet the exempt purposes set forth in section 501(c)(3). Also, I have worked at different types of public libraries that have been 501(c)(3)'s. Based on my reading of the IRS's eligibility requirements and state education law, the important part as far as the IRS is concerned is the structure and authority of an organization's charter. The Board of Regents is responsible for chartering public libraries in the state, so why should it matter what type of library results from the charter? However, IANAL, so I may be misunderstanding or missing something important. That's where you come in!