Not sure what figures you are using but have you looked at these? I recently boght them for the G2 males.
http://www.contentparadise.com/us/user/old_west_clothing_set_for_g2_males_time_travel_series_product_25789
I know they are western, but western WAS late Edwardian. Add a coat and change the hat and they might work in a pinch.

mike