Question concerning William F. Buckley's writing

In one of Buckley's books, probably one of the ones on voyaging
(Atlantic High, Airborn, Racing Through Paradise, Windfall...) WFB
mentions, early on, I believe, about once taking some of the family
silver and burying it so that son Christopher (?) can have the joy of
hunting and finding buried treasure. Unfortunately, the silver is not
to be found.

Does anyone know where this is found, or am I in the wrong NG? Or worse
(not too likely) the wrong author?

Thank you in advance,
Marvin Sebourn
osugeography RemoveThis @aol.com