Some of that stuff is in Appendix H of the online documentation: http://www.loc.gov/marc/bibliographic/bdapndxh.html -Tod On Jan 27, 2010, at 1:59 PM, Jonathan Rochkind wrote: > I know I've seen documetnation on the LC site before for since-abandoned > marc bib tags, like 400. But I can't for the life of me find it now > navigating around the website or googling. does anyone know where this is? > > Jonathan