What is it you're trying to accomplish here, Iggy? Are you looking for the values of the founding fathers, or those of the early colonizers? Or are you trying to find the core values of Americans today?
For example, my ancestors (who arrived here in the 1650s) would have told you that a good Quaker is a dead Quaker, and that the value of an Iroquois scalp was 12 pounds in Boston. The Puritans were quite communistic, as were the many utopian communes established in the New World by sects driven out of Europe.
Attitudes and values were far more diverse in the early times than the simplistic stereotypes we learn in school.
As for values today, you may come up with a list of ideals, of which your short list is not a bad start. Despite what some rightists will claim, individual responsibility is generally recognized as an ideal, regardless of how it's practiced. Civility, likewise.
But these are abstractions built upon legends and some shared historical ideas. If you want to know how values had shaped up by the early 19th century, which is a very good snapshot of the evolving America and its behaviors and ideals, you won't do better than de Toqueville's _Democracy in America_:
I haven't read it since the late '60s so I'm sure it would all be a surprise to me, if I re-read it. d8-)