On 10/6/06, David Gerard <dgerard(a)gmail.com> wrote:
Someone got a letter from OS saying which 50-year
period it was,
didn't they? Clearly and unambiguously. I know we're clear 50 years
after *publication*. I suppose it depends what counts as
"publication."
I doubt there is much in the way of OS maps that have not been
published. The photography stuff is different. Some stuff may have
surfaced in archiology journals but it is the case that much has not
been published (a lot is still film fortunetly I think they had stoped
using Nitrocellulose by that point).
--
geni