AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 A Voting Trust Agreement ("Agreement") was entered into as of June 30, 1989, between certain holders of the Series A Common Shares, par value $1.00 per share, of Telephone and Data Systems, Inc., an Iowa corporation ("Certificate Holders"), and WALTER C.D. CARLSON, LETITIA G.C. CARLSON, LEROY T. CARLSON, JR., MELANIE J. HEALD AND DONALD C. NEBERGALL, as Trustees. Paragraph 8.5 of the Agreement provides that the Agreement may be amended upon the consent in writing of an eight-vote majority of the Trustees and no less than ninety percent (90%) in interest of the Certificate Holders of record. Pursuant to paragraph 8.5 of the Agreement, the Agreement is hereby amended as follows: LEROY T. CARLSON shall be permitted to withdraw up to 650 Series A Common Shares from the voting trust, by written instrument delivered to the Trustees prior to December 31, 1991, and upon his surrender of the corresponding number of Voting Trust Certificates, without the conversion of such shares into Common Shares and without notice of such withdrawal to the Trustees (other than such written notice) or to any other Certificate Holder. Furthermore, paragraph 3.2 of the Agreement (relating to the granting of options) shall not apply to any withdrawal pursuant to the preceding sentence. IN WITNESS WHEREOF, the following Trustees signify their approval of the foregoing amendment as of the date set opposite the name of each such Trustee. Dated: 6/13/91 /s/ Walter C.D. Carlson __________ ____________________________________________ Walter C.D. Carlson, Trustee (2 votes) Dated: 6/19/91 /s/ Letitia G.C. Carlson __________ ____________________________________________ Letitia G.C. Carlson, Trustee (2 votes) Dated: 6/17/91 /s/ LeRoy T. Carlson, Jr. __________ ____________________________________________ LeRoy T. Carlson, Jr., Trustee (2 votes) Dated: 6/24/91 /s/ Melanie J. Heald __________ ____________________________________________ Melanie J. Heald, Trustee (1 vote) Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Trustee (2 votes) SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -2- IN WITNESS WHEREOF, the following Certificate Holders signify their approval of the foregoing amendment as of the date set opposite the name of each such Certificate Holder. Dated: 7/22/91 /s/ Arthur Anderson __________ ____________________________________________ Arthur Anderson, custodian for Jacob Anderson, Certificate Holder Dated: 7/22/91 /s/ Arthur Anderson __________ ____________________________________________ Arthur Anderson, custodian for Samuel Keith, Certificate Holder Dated: __________ ____________________________________________ Eric Anderson, Certificate Holder Dated: 7/13/91 /s/ Kendrick Anderson, Custodian __________ ____________________________________________ Kendrick Anderson, custodian for Eve Anderson, Certificate Holder Dated: 7/13/91 /s/ Kendrick Anderson, Custodian __________ ____________________________________________ Kendrick Anderson, custodian for Jill Anderson, Certificate Holder Dated: 7/10/91 /s/ K.C. August __________ ____________________________________________ K.C. August, Certificate Holder Dated: 6/17/91 /s/ LeRoy T. Carlson __________ ____________________________________________ LeRoy T. Carlson, Certificate Holder Dated: 6/30/91 /s/ Margaret D. Carlson __________ ____________________________________________ Margaret D. Carlson, Certificate Holder Dated: 6/17/91 /s/ LeRoy T. Carlson, Jr. __________ ____________________________________________ LeRoy T. Carlson, Jr., Certificate Holder SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -3- /s/ LeRoy T. Carlson, Jr., custodian Dated: 6/17/91 for Anthony J.M. Carlson __________ ____________________________________________ LeRoy T. Carlson, Jr., custodian for Anthony J.M. Carlson, Certificate Holder /s/ Catherine Mouly, custodian for Dated: 7/7/91 Anthony J.M. Carlson __________ ____________________________________________ Catherine Mouly, custodian for Anthony J.M. Carlson, Certificate Holder /s/ Byron Wertz, trustee for Anthony Dated: J.M. Carlson __________ ____________________________________________ Byron Wertz, trustee for Anthony J.M. Carlson, Certificate Holder /s/ LeRoy T. Carlson, Jr., custodian for Dated: 7/17/91 Leo P.M. Carlson __________ ____________________________________________ LeRoy T. Carlson, Jr., custodian for Leo P.M. Carlson, Certificate Holder /s/ Byron Wertz, trustee for Leo P.M. Dated: Carlson __________ ____________________________________________ Byron Wertz, trustee for Leo P.M. Carlson, Certificate Holder Dated: 7/7/91 /s/ Catherine Mouly __________ ____________________________________________ Catherine Mouly, Certificate Holder Dated: 6/19/91 /s/ Letitia G. C. Carlson __________ ____________________________________________ Letitia G. C. Carlson, Certificate Holder Dated: 6/19/91 /s/ Edwin Himwich __________ ____________________________________________ Edwin Himwich, Certificate Holder Dated: 6/27/91 /s/ Prudence E. Carlson __________ ____________________________________________ Prudence E. Carlson, Certificate Holder Dated: 6/27/91 /s/ Richard Beckett __________ ____________________________________________ Richard Beckett, Certificate Holder Dated: 6/13/91 /s/ Walter C.D. Carlson __________ ____________________________________________ Walter C.D. Carlson, Certificate Holder SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -4- Dated: 6/13/91 /s/ Walter C.D. Carlson, Custodian __________ ____________________________________________ Walter C.D. Carlson, custodian for Amanda Liv de Hoyos Carlson, Certificate Holder /s/ Byron Wertz, trustee for Amanda L. Dated: de Hoyos __________ ____________________________________________ Byron Wertz, trustee for Amanda L. de Hoyos, Certificate Holder Dated: 6/13/91 /s/ Walter C.D. Carlson, Custodian __________ ____________________________________________ Walter C.D. Carlson, custodian for Greta M. de Hoyos Carlson, Certificate Holder /s/ Byron Wertz, trustee for Greta M. Dated: de Hoyos Carlson __________ ____________________________________________ Byron Wertz, trustee for Greta M. de Hoyos Carlson, Certificate Holder Dated: 6/13/91 /s/ Walter C.D. Carlson, Custodian __________ ____________________________________________ Walter C.D. Carlson, custodian for Linnea Faith de Hoyos Carlson, Certificate Holder Dated: 7/15/91 /s/ Debora M. de Hoyos __________ ____________________________________________ Debora M. de Hoyos, Certificate Holder Dated: 7/18/91 /s/ Yvonne M. Carlson __________ ____________________________________________ Yvonne M. Carlson, Certificate Holder Dated: 6/24/91 /s/ Melanie J. Heald __________ ____________________________________________ Melanie J. Heald, Certificate Holder Dated: 7/6/91 /s/ Dorothea Hopkins __________ ____________________________________________ Dorothea Hopkins, Certificate Holder Dated: 6/25/91 /s/ Lester O. Johnson __________ ____________________________________________ Lester O. Johnson Trust, Certificate Holder Dated: 7/7/91 /s/ Frances Johnson __________ ____________________________________________ Frances Johnson Trust, Certificate Holder SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -5- Dated: 9/05/91 /s/ Graham Johnson Sharon Johnson __________ ____________________________________________ Graham Johnson & Sharon Johnson, Certificate Holder Dated: 7/7/91 /s/ Kent Johnson __________ ____________________________________________ Kent Johnson, Certificate Holder Dated: 7/7/91 /s/ Laurel Ann Johnson __________ ____________________________________________ Laurel Ann Johnson, Certificate Holder Dated: 7/18/91 /s/ Dana Dougherty __________ ____________________________________________ Dana Dougherty, Certificate Holder Dated: __________ ____________________________________________ Dagmar Maldonado, custodian for Dana Dougherty, Certificate Holder Dated: 7/18/91 /s/ Ross Carlson __________ ____________________________________________ Ross Carlson, custodian for Dana Dougherty, Certificate Holder Dated: __________ ____________________________________________ Dagmar Maldonado, custodian for Adam Maldonado, Certificate Holder Dated: 7/18/91 /s/ Ross Carlson __________ ____________________________________________ Ross Carlson, custodian for Adam Maldonado, Certificate Holder Dated: __________ ____________________________________________ Dagmar Maldonado, custodian for Nicole Maldonado, Certificate Holder Dated: 7/18/91 /s/ Ross Carlson __________ ____________________________________________ Ross Carlson, custodian for Nicole Maldonado, Certificate Holder Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Certificate Holder SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -6- Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Trustee U/A dated 1/1/56 for Walter C.D. Carlson, Certificate Holder Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Trustee U/A dated 10/24/60 for Letitia G.C. Carlson, Certificate Holder Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Trustee U/A 12/28/72, Certificate Holder Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Trustee U/A date 12/31/76, Certificate Holder Dated: 6/17/91 /s/ Donald C. Nebergall __________ ____________________________________________ Donald C. Nebergall, Trustee Lead Annuity Trust for Wellesley College, Certificate Holder /s/ Byron Wertz, Custodian for Allison Dated: M. Wertz __________ ____________________________________________ Byron Wertz, custodian for Allison M. Wertz, Certificate Holder /s/ Byron Wertz, Custodian for Joseph Dated: E. Wertz __________ ____________________________________________ Byron Wertz, custodian for Joseph E. Wertz, Certificate Holder Dated: Sept. 4, 1991 /s/ Florence Wertz John E. Wertz __________ ____________________________________________ Florence Wertz & John E. Wertz '81 Trust, Certificate Holder Dated: 7/15/91 /s/ John Alan Wertz __________ ____________________________________________ John Alan Wertz, Certificate Holder SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -7- Dated: 9-9-91 /s/ Kristin Wertz __________ ____________________________________________ Kristin Wertz, Certificate Holder Dated: 7/21/91 /s/ Paul G. Wertz cust for Elizabeth __________ ____________________________________________ Paul G. Wertz, custodian for Elizabeth D. Wertz, Certificate Holder Dated: 7/21/91 /s/ Paul G. Wertz cust for Jessica __________ ____________________________________________ Paul G. Wertz, custodian for Jessica A. Wertz, Certificate Holder SIGNATURE PAGE TO THE AMENDMENT DATED AS OF MAY 9, 1991, TO THE VOTING TRUST AGREEMENT DATED AS OF JUNE 30, 1989 -8-