On Thu, Jul 29, 2010 at 3:33 PM, andrzej zaborowski <balrogg at gmail.com> wrote: > The only tiger tag that is important to keep (to me) is the > tiger:tlid, all the other values can be pulled from the original TIGER > database provided the TLID. Unfortunately, that's also one of the hardest ones to keep, because it doesn't have any real world meaning.