To reach any individual, use the contact information available on the people page.

Our mailing address is:
PER Group
c/o Noah Finkelstein
Boulder CO 80309-0390

Our Street Address is:
Duane Physics E1B32
2000 Colorado Ave
Boulder, CO 80309-0390

Our Facsimile:
303 492 3352

For information about this website, contact: Ed Johnsen