American philosophy is the philosophical activity or output of Americans, both within the United States and abroad. More at Wikipedia
History of philosophy - The history of philosophy is the study of philosophical ideas and concepts through time.
American Philosophical Association - The American Philosophical Association is the main professional organization for philosophers in the United States.
American Philosophical Society - The American Philosophical Society is a discussion group founded in 1743 by Benjamin Franklin as an offshoot of his earlier club, the Junto.