1 EXHIBIT 24.1 POWER OF ATTORNEY SIGNATURES Pursuant to the requirements of the Securities Act, the registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, on June 15, 2001. The Williams Companies, Inc. (Registrant) By: /s/ SUZANNE H. COSTIN ------------------------------------ Name: Suzanne H. Costin Title: Corporate Secretary Each of the undersigned hereby constitutes and appoints William G. von Glahn, Lonny E. Townsend and Suzanne H. Costin his or her true and lawful attorneys-in-fact, each with power of substitution and re-substitution, for him and in his name, place and stead, in any and all capacities, to sign any or all amendments, including post-effective amendments, and supplements to this Registration Statement, and any related Rule 462(b) Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that said attorneys-in-fact and agents, each acting alone, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the following capacities on June 15, 2001: SIGNATURE TITLE --------- ----- /s/ KEITH E. BAILEY Chairman of the Board, President, Chief - -------------------------------------------------------- Executive Officer (Principal Executive Keith E. Bailey Officer) and Director /s/ JACK D. MCCARTHY Senior Vice President -- Finance (Principal - -------------------------------------------------------- Financial Officer) Jack D. McCarthy /s/ GARY R. BELITZ Controller (Principal Accounting Officer) - -------------------------------------------------------- Gary R. Belitz /s/ HUGH M. CHAPMAN Director - -------------------------------------------------------- Hugh M. Chapman /s/ GLENN A. COX Director - -------------------------------------------------------- Glenn A. Cox 2 SIGNATURE TITLE --------- ----- /s/ THOMAS H. CRUIKSHANK Director - -------------------------------------------------------- Thomas H. Cruikshank /s/ WILLIAM E. GREEN Director - -------------------------------------------------------- William E. Green /s/ W.R. HOWELL Director - -------------------------------------------------------- W.R. Howell /s/ JAMES C. LEWIS Director - -------------------------------------------------------- James C. Lewis /s/ CHARLES M. LILLIS Director - -------------------------------------------------------- Charles M. Lillis /s/ GEORGE A. LORCH Director - -------------------------------------------------------- George A. Lorch /s/ FRANK T. MACINNIS Director - -------------------------------------------------------- Frank T. MacInnis /s/ GORDON R. PARKER Director - -------------------------------------------------------- Gordon R. Parker /s/ JANICE D. STONEY Director - -------------------------------------------------------- Janice D. Stoney /s/ JOSEPH H. WILLIAMS Director - -------------------------------------------------------- Joseph H. Williams