I remember seeing a picture of a Don Milberger custom frame in, I think, an old Bike World. Very thin lugs a la Eisentraut or Kvale, blind allen key seat lug, dark metallic paint, cantilevers or centerpulls as I recall. A great early example of frame art/ engineering from the emerging American school of framebuilding and design.
Love to have one of those,
Ken Wehrenberg, Hermann, MO USA