When the name of a corporate body is available only in its pre-revolutionary spelling, establish the heading in the original spelling and make an arbitrary reference from the modern spelling. When the first item arrives with the modern spelling, change the heading (RI24.2C)

Example

110 20 Besieda liubitelei russkago slova
410 20 Beseda liubitelei russkogo slova
410 20 Besieda liubitelei rossiiskoi slovesnosti
670 Altshuller, M. Predtechi slavianofolstva v russkoi literature (Obshchestvo "Beseda liubitelei russkogo slova") 1984:‡bt.p. (Beseda liubitelei russkogo slova) back cover (existed 1811-1815)
670 Entsiklopedicheskii slovar (Brokgauz, Efron):‡bv. 3a, p. 628 (Besieda liubitelei rossiiskoi slovesnosti)
670 Novyi entsiklopedicheskii slovar:‡bv. 6, p. 299 (Besieda liubitelei russkago slova)