Hi~ I just found this question while I'm goolgling some information.
Thus, I would like to response to your question as I know about it. Perhaps the time passed by so long.. though.
You can search the information of Won Buddhism via website: www.wonbuddhism.org
and also here are other information of them:
Won Buddhism of Manhattan temple : www. nyc.wonbuddhism.org www.wonbuddhist.org
Won Dharma Center : www.wondharmacenter.org
There are several temples in the East part and West America.
in Chicago, Boston, New york, Philadelpia, Washington, North Carolina, Florida.
San francisco, Berkley, LA, San diego, Colorado(denver), Texas...etc. I can remember only these things.
Here is what I can respond to it with my poor English.
Thanks. Palms together. _()_