Wikidata:Property proposal/Archives Directory for the History of Collecting in America ID

Description	identifier from the Archives Directory for the History of Collecting in America
Data type	External identifier
Domain	art collector (Q10732476), art dealer (Q173950), art advisor (Q15021099), art gallery (Q1007870), art historian (Q1792450), archive (Q166118), auction house (Q9209474), artist (Q483501), art critic (Q4164507), patron of the arts (Q15472169)
Allowed values	[1-9]\d*
Example 1	Henry Clay Frick (Q93709) → 6285
Example 2	Brockman Gallery (Q65937145) → 11982
Example 3	Peggy Guggenheim (Q233806) → 6698
Example 4	Candy Store Gallery (Q16851533) → 6071
Source	http://research.frick.org/directoryweb
External links	Use in sister projects: [ar] • [de] • [en] • [es] • [fr] • [he] • [it] • [ja] • [ko] • [nl] • [pl] • [pt] • [ru] • [sv] • [vi] • [zh] • [commons] • [species] • [wd] • [en.wikt] • [fr.wikt].
Number of IDs in source	2,212 as of 7/25/2019
Expected completeness	always incomplete (Q21873886)
Formatter URL	http://research.frick.org/directoryweb/browserecord.php?-action=browse&-recid=$1

The Archives Directory for the History of Collecting in America is a scholarly database containing information about "American art collectors, dealers, agents and advisors, and the repositories that hold these records" managed by the Center for the History of Collecting (Q20745457) at the The Frick Collection (Q682827). It could serve as an external resource for these item types and fills in gaps of other similar external identifiers such as Union List of Artist Names (Q2494649). Infopetal (talk) 15:23, 25 July 2019 (UTC)[reply]

Support. Nomen ad hoc (talk) 16:30, 25 July 2019 (UTC).[reply]
Support David (talk) 04:30, 26 July 2019 (UTC)[reply]
Support good catch. Multichill (talk) 16:16, 26 July 2019 (UTC)[reply]
Support - PKM (talk) 02:18, 28 July 2019 (UTC)[reply]
Neutral Unfortunately is everything on that site copyrighted. - Premeditated (talk) 15:29, 29 July 2019 (UTC)[reply]
@Premeditated: Although the copyright notice is for the parent domain and not the particular resource in question here, even if the database was itself under copyright, I'm not aware of any Wikidata guidelines or restrictions that would impose restrictions on linking out to a copyrighted external resource, and there are other examples of existing identifiers that do so, i.e. JSTOR article ID (P888), Benezit ID (P2843), Christie's creator ID (P4200), et al. Additionally, given Wikidata intends to represent facts, and I would consider the statement that a particular item has a particular identifier to be a fact, and facts are not covered by copyright (at least in the United States), I am not seeing how copyright issues would apply to adding an external identifier property. Is there a particular Wikidata guideline you are thinking of that you could point me to that addresses this topic? Infopetal (talk) 17:40, 31 July 2019 (UTC)[reply]
Support. Andy Mabbett (Pigsonthewing); Talk to Andy; Andy's edits 20:46, 31 July 2019 (UTC)[reply]