Has anyone attempted to make a list of all the missing manuscipts, i.e. those that have been referred to in publications or on websites and can no longer be found? I have been looking for the William Clarke tune manuscript from 18th century Lincoln, which according to "Hardcore English" was in the Lincoln Record Office. It isn't. Do I understand that the Mittel and Irwin tune manuscripts are also "missing"?

I could also add William Barrett's collection of broadsides which used to be in the Vaughan Williams Memorial Library.

Can anyone add to the list?