I believe this has been answered with the fact that, there are none!
At least none for public use.
NASA has a Public Information person, that would be your first and
possibly ONLY way to contact any of the project Scientists.
For obvious reasons they need a way to keep the crackpots away so they
can get on with the business that Scientists do, discover and analyze
things.
You can probably thank people like Brad Guth for these types of levels
of security.

On Fri, 10 Feb 2006 15:04:39 -0800, "Max Power"
<mikehack@u.washington.edu> wrote:

What are the internal fax contact numbers for the NASA Pluto and Voyager 
Missions?

I need to pass on a technical proposal relating to craft mission 
telecommunications (telemetry reception).
The nature of the proposal does not need traditional peer review as it is a 
distributed computing project.

I would like to pass the same proposal on to the (North American branch of 
the) European Space Agency (ESA), as NASA may be totally inept or downright 
unhelpful when it comes to implementing the proposal.

NASA's monopoly on space research vanished long ago -- and NASA and its 
"hanger ons" may lack either the intellect or will power to implement this 
proposal.