Vault Of The Ages

Yes! By reading Poul Anderson's Introduction, "The Time Capsule," to his Vault Of The Ages (New York, 1969), I have confirmed that it is indeed set on Earth five hundred years after a nuclear war. Therefore, I will reread it after Twilight World and Shield, although this will take a while especially with a family funeral scheduled for next week.

Is Vault Of The Ages classified as a juvenile novel?

"The Time Capsule," which I do not remember reading before, is an excellent synopsis of information about the time capsules in Atlanta, Georgia, and New York City. For the latter, 3650 copies of a Book of Record, printed on permanent paper with special ink, distributed to libraries, museums, monasteries, lamaseries, temples etc and containing a request that it be translated into each newly emerging language, describes how to find the securely buried capsule when it is to be opened in 6938.

The Roman poet Horace wrote: "Exegi monumentum aere perennius (I have erected a monument more lasting than bronze)."

A Shakespeare sonnet ends:

"And yet to times in hope my verse shall stand,
"Praising thy worth despite his cruel hand."

 James Elroy Flecker wrote a poem To A Poet A Thousand Years Hence, ending:

"To greet you. You will understand."

(Flecker's recorded voice reciting this poem is on the Internet.)
 www.youtube.com/watch?v=8l3EgFRbzG4