Pin-back buttons serve many purposes. They are efficient advertising vehicles, handy for fund-raising in support of a cause, concise statements of a person’s beliefs, a form of educational outreach, and convenient ice-breakers for conversation. NMAH has several hundred pin-back buttons related to disability, including this one. Students at the Brooklyn campus of Long Island University founded DIA, Disabled in Action, in 1970, to advocate for the rights of people with disabilities.