[Rd] Acknowledgments in package documentation

[Jeff Enos]

R-devel,

I've received permission from a third party to incorporate some of
their data in a data set in my 'portfolio' package.  I'd like to
include an acknowledgment of the third party, and perhaps a "used with
permission" somewhere in the package documentation.

Where's the best spot in the package docs for such an acknowledgment?
Is there a place preferable to the \description or \source sections of
the data set's .Rd file?

Thanks in advance,

Jeff