Welch Consulting
This firm is headed by Finis Welch, and it specializes "in analyzing
complex economic and statistical problems and in preparing analyses
for presentation as legal evidence." Specifically, their practice
areas include statistics and economics, the calculation of economic
damages, and general economics. They have a large staff (many with
PhDs) and offices in College Station, Washington D.C., and Santa
Monica.
http://www.welchcon.com/