ACAT Istanbul versus Constantinople

Posting to Autocat

On 10/28/2015 7:32 PM, J. McRee Elrod wrote:
If anyone had bothered to look, they would have found that Constantinople *is* a valid subject heading for the period. The heading questioned was a mistake.

A portion of the authority:

151 __ |a Constantinople

667 __ |a Valid as a name heading for the period 330-1453.
There is a cross reference to/from Istanbul (Turky).

LCSH seems to make an exception from subject entry under latest form for Constantinople. Otherwise there would just be a 110 would there not? It would be clearer if the 667 said “name subject heading”.

I have looked at it: It says:

Valid as a name heading for the period 330-1453.
SUBJECT USAGE: This heading is not valid for use as a subject. Works about this place are entered under Istanbul (Turkey).

So Constantinople (and Byzantium) is valid as a corporate (jurisdiction/government) heading but not valid as a subject. So, it can be used in a 110/710 and 610 but not as a 651 or 6xx$z.