Funny what one (namely, me) will find when one (namely me, again) looks. About a month ago I became a member of Scandinavian House in NYC.
For a nominal yearly fee there are all sorts of perks...reduced fees to certain exhibits, invites to member-only exhibit openings, music events, an organizational newsletter and subscription to Nordic Reach magazine, 10% discount to Smörgås Restaurant, and the gift shop. All of which are totally worth the annual dues which start at $50. Plus even for the non-member there are many free events for the whole family.
So when visiting NYC check out the Scandinavian House website at http://www.scandinaviahouse.org and plan a trip there. Even if your ancestors are not Scandinavian I guarantee that you will leave with some sort of appreciation for the culture and people.
Added bonus; practicing my Swedish language skills! Mycket bra!