About seventy responses later I'm finally getting around to summarizing what I heard back. In the interests of saving space, I have not included requests from individuals.
Shipping seems to be the big bugaboo.
With the mail bag option of the USPS, you pay a low per pound rate for surface shipping which varies with distance shipped. Check with your local P.O., as limitations per bag apply. This may also work for APO addresses overseas. Weighed about 50 lb, which would not make for outrageous postage, even overseas. I've indicated where the person contacted said that their institution would or might pay for shipping.