Nathan Parker, the author of LOOKUP, maintains the LOOKUP servers at Lawrence Berkeley Laboratory. Parker is presently supported by the Bureau of the Census.
Deane Merrill, Lawrence Berkeley Laboratory, maintains the University of California CD-ROM Information System which is used by LOOKUP.
Chris Stuber, maintains the LOOKUP server at the Bureau of the Census.
Mail sent to lookup@census.gov is directed to Merrill and Stuber.
ngparker@lbl.gov dwmerrill@lbl.gov chris.stuber@census.gov