*Andrew, as always, most helpful news, kindest thanks! more [YZ] below:*

*1.       No disagreement, except that some 151 appears in the name file and
some appear in the subject file:*
*n82068148           008/11=a             008/14=a             151 _ _ $a
England*
*sh2010015057    008/11=a             008/14=b             151 _ _ $a
Tabasco Mountains (Mexico)*
*[YZ] would it be possible then to use both files as sources and create one
file for geographical names for our purpose(s)?*

*2.       Yes, see n50000359*
*151 _ _ $a Sonora (Mexico : State)*
*751 _ _ $z Mexico $z Sonora (State)*
***[YZ]  Both stand for a distinct cataloging usage. Jonathan's suggestion
to consult LC may answer the question of which field/when to use for
geographical names
*
*3.       Oops, my apologies to my VIAF colleagues, I believe that
geographic names are in the works… *
***[YZ] inshAllah!*
*
*
*4. That is probably correct. England may appear as both a 110 *and* a 151
because the 110 signifies the concept for the country entity while the 151
signifies the concept for the geographic place. A subtle distinction...*
*[YZ] Exactly. This distinction called for creating both a 110 AND a 151.
But we are talking about 151. The case where there is both a 110 and a 151
does NOT apply to geographic names, only to some.*
*
*
*[YZ] VIAF would be helpful to provide a way to limit geographical names
ONLY to 151 names and their cross references.*