Old people -- See Older people Here are entered works on people older than middle age.
Old Persian inscriptions -- See Also Cuneiform inscriptions Here are entered collections, and specimens of, and works on, cuneiform writing inscribed on stone, metal and other hard surfaces. Collections and specimens of, and works on, cuneiform writing preserved on clay tablets are entered under Cuneiform tablets. Such works, if limited to a particular language, are entered under the name of the language with the subdivision Texts.
Old Southwest -- See Southwest, Old Here are entered works on the region that comprised the southwestern part of the United States before the cessions of land from Mexico following the Mexican War, generally including the states of Louisiana, Texas, Oklahoma, Arkansas, Tennessee, Kentucky, Missouri, and sometimes Mississippi.
Old Testament apocryphal books -- See Apocryphal books (Old Testament) Here are entered collections of texts of those books (frequently called Pseudepigrapha) related to the Old Testament, but excluded from both the Catholic canon and the Protestant and Jewish canons of the Old Testament. Works on individual books of this group are entered under their own title. Collections of texts of those books excluded from only the Protestant and Jewish canons of the Old Testament are entered under Bible. Apocrypha.