was adopted by the American Library Association Council on June 19, 1939. It was amended in 1944, 1948, 1961, 1967, and 1980. The inclusion of 'age' was reaffirmed in 1996. ALA added a seventh article addressing privacy in 2019. The document currently reads:

While the Library Bill of Rights itself is concise and unambiguous in nature, the American Library Association provides additional documentation referred to as the Interpretations of the Library Bill of Rights, which elaborates