Recommendation letter

1. Roger W. Cohen
7165 Fay Avenue
La Jolla, CA 92037
January 18, 2010
To Whom It May Concern:
Jeff Lassle and I have been working together in a group of businessmen, scientists and
politicians in California on activities aimed at educating the public on various matters of strong
public concern. I have found Jeff to be extremely knowledgeable and sophisticated about a
wide variety of economic and regulatory issues. He is clearly experienced in these matters and
draws heavily from his significant experience in industry. He is energetic and articulate, having
strong communication and persuasion skills that make him effective in a highly diverse group.
Jeff has assumed a leadership role in coordinating and organizing a complex set of activities.
I enjoy working with Jeff, and it is a pleasure to recommend him for a position of responsibility in
your organization.
Very truly yours,
Roger W. Cohen
Manager, Strategic Planning and Programs
Exxon Mobil Research and Engineering Company
Exxon Mobil Corporation (retired)