That is what I thought. But I was wrong.
My conclusion from this, since civil procedure has certainly evolved in the US of A since 1952--class, can you say Fuentes v. Shevin?--is that this particular convention is probably fairly useless, unlike the Hague Convention on Service Abroad, which our very own State Department has thoughtfully provided for us. In fact, State's web site is pretty good, though it won't win any prizes for its looks. The Hague people should take a leaf from State's book, although the Hague Conventions are drafted as far as I know by mysterious and shifting committees that do not stick around long enough to erect websites. I think that's another research project for another evening.