Exhibit 4(b)(1) March 12, 1997 Securities and Exchange Commission Judiciary Plaza 450 Fifth Street, N.W. Washington, D.C. 20549 Re: Texas Utilities Company 1996 Annual Report on Form 10-K ------------------------------- Gentlemen: Pursuant to the exemption afforded by Item 601(b)(4)(iii)(A) of Regulation S-K, Texas Utilities Company (Company) is not filing as exhibits to its Annual Report on Form 10-K for 1996 instruments with respect to its long-term debt of the Company and/or its subsidiaries. These instruments include (i) agreements with respect to pollution control revenue bonds and (ii) agreements with respect to senior notes. Each item of long-term debt referenced above does not exceed 10% of the total assets of the Company and its subsidiaries on a consolidated basis. Reference is made to Note 8 to Consolidated Financial Statements (Item 8 of the Company's Annual Report on Form 10-K for 1996). The Company agrees to furnish a copy of the above instruments to the Securities and Exchange Commission upon request. Sincerely, /s/ Peter B. Tinkham --------------------------------- Peter B. Tinkham Treasurer and Assistant Secretary and Principal Financial Officer PBT:tr