When the holder of a notable work lends it for public exhibition, the act is generous and public-spirited. It allows others to see something they would not otherwise see, and it contributes to the life of an institution. But an exhibition is also a documented event, and the documentation, the catalogue above all, has a long and quiet life of its own.

A catalogue is made to last. It records the works shown, and conventionally it records something of where each came from. The lender may be named, or described, or noted in a way that those who follow such things can readily interpret. The catalogue is not a private document. It is published, it is kept, it sits in libraries and reference collections, and it remains legible for decades.

The loan of a work can place on a durable public record the fact that a particular person, or a particular collection, holds it. The catalogue, consulted years later, still says so. A holding that might otherwise have been known only to a few becomes, through the act of lending, a matter that can be looked up.

The provenance of a work compounds this. Serious works carry a recorded history of ownership, and an exhibition is one of the events that history notes. A loan does not merely disclose present ownership; it adds a dated entry to a chain that connects the work, and therefore its owners, across time. Provenance is a record built precisely to be followed.

None of this argues against lending, which is among the better things a holder of significant works can do. It argues for lending with awareness: an understanding that the catalogue is a lasting public document, that being named or identifiably described in it is a disclosure, and that the disclosure can be discussed and shaped in advance with the institution, which is usually willing to do so.

The sound approach is to treat the documentation of a loan as part of the loan itself, to be considered alongside the work, the institution, and the occasion. Generosity and discretion are not opposed. A work can be lent, and seen, and enjoyed by the public, while the question of how its owner is recorded in the lasting catalogue is handled with the same care given to everything else.