NewMarket Corp. Watch

from 8-K 40 pages NewMarket Corporation (A Virginia Corporation) $400,000,000 2.700% Senior Notes Due 2031 Underwriting Agreement

from SC 13D/A 1 page Newmarket Corporation 330 South Fourth Street Post Office Box 2189 Richmond, Virginia 23218-2189 Power of Attorney

from SC 13D 3 pages Purchase Agreement

from SC 13D ~5 pages Joint Filing Agreement the Undersigned Parties Hereby Agree That the Schedule 13d Filed Herewith Relating to the Common Stock, Without Par Value of Newmarket Corporation Is Being Filed Jointly With the Securities and Exchange Commission Pursuant to Rule 13d-1(k) on Behalf of Each Person. Date: August 1, 2005 Robotti & Company, Incorporated /S/ Robert E. Robotti By: /S/ Robert E. Robotti Robert E. Robotti Name: Robert E. Robotti Title: President and Treasurer Robotti & Company, LLC Robotti & Company Advisors, LLC By: Robotti & Company, Incorporated By: Robotti & Company, Incorporated By: /S/ Robert E. Robotti By: /S/ Robert E. Robotti Name: Robert E. Robotti Name: Robert E. Robotti Title: President and Treasurer Title: President and Treasurer Suzanne and Robert Robotti Foundation, Incorporated /S/ Suzanne Robotti By: /S/ Robert E. Robotti Suzanne Robotti Name: Robert E. Robotti Title: Director /S/ Kenneth R. Wasiak Kenneth R. Wasiak Ravenswood Management Company, L.L.C. the Ravenswood Investment Company, L.P. By: /S/ Robert E. Robotti By: Ravenswood Management Company, L.L.C. Name: Robert E. Robotti Its General Partner Title: Managing Member By: /S/ Robert E. Robotti Name: Robert E. Robotti Title: Managing Member