============= Page 1 of 1 ============= i** May 30, 2001 Kenneth L Lay Chairman of the Board Enron Corp. P.O.Box1188 Houston, TX 77251-1188 713-853-6773 Fax 713-853-5313 kennethlayeenron.com Rocky Emery Paine Webber, Inc. Private Client Group 109 N. Post Oak Lane, Suite 150 Houston, TX 77024 RE: Sale of 75,491 shares of Enron Corp. to Company for Repayment of $4,000,000 LOC plus accrued interest through May 25, 2001 Dear Rocky: This letter is your authority to transfer the remaining 5,993 shares of Enron Corp. stock from the stock option award, Grant #5494, with an exercise date of 4/19/00,.56,537 shares of Enron Corp. stock from the stock option award, Grant #3718, with an exercise date of 3/15/00, and 12,961 shares of Enron Corp. stock from the stock option award, Grant #5108, with an exercise date of 1/24/00, in Paine Webber Acct. HM-E0133-ES to the Enron Corp. Omnibus Paine Webber Acct. HS-54630-EN by or before Friday, June 1, 2001. Please call Sherrie Gibson at 713/630-0103 should you have any questions. Sincerely, EXH012-01937 CC: Elaine Overturf Pam Butler Joanne Cortez Sherrie Gibson Endless possibilities. TM 5 ':,,,-*)5--0 / 16- .4 41 gt1AldS 53.no EC38648B0050219 GOVERNMENT EXHIBIT 2510 Crim. No. H-04-25 (S-2)