EXHIBIT INDEX EXHIBIT DESCRIPTION EX-99.1a Amended and Restated Declaration of Trust, dated June 16, 1993 and amended May 31, 1995, is incorporated herein by reference to Exhibit 1 of Post-Effective Amendment No. 3 filed on April 24, 1996. EX-99.1b Amendment to the Declaration of Trust dated October 21, 1996, is incorporated herein by reference to Exhibit 1b of Post-Effective Amendment No. 5 filed on June 27, 1997. EX-99.2 Amended and Restated Bylaws, dated March 9, 1998, are incorporated herein by reference to Exhibit 2 of Post-Effective Amendment No. 23 to the Registration Statement of American Century Municipal Trust filed on March 26, 1998. EX-99.4 Agreement and Plan of Reorganization is filed herein. Ex-99.6a Management Agreement - Investor Class between American Century Investment Trust and American Century Investment Management, Inc., dated August 1, 1997, is incorporated herein by reference to Exhibit 5a of Post-Effective Amendment No. 33 to the Registration Statement of American Century Government Income Trust, filed on July 31, 1997. EX-99.6b Management Agreement - Advisor Class between American Century Investment Trust and American Century Investment Management, Inc., dated August 1, 1997, is incorporated herein by reference to Exhibit 5b of Post-Effective Amendment No. 27 to the Registration Statement of American Century Target Maturities Trust, filed on August 28, 1997. EX-99.7 Distribution Agreement between American Century Investment Trust and Funds Distributor, Inc., dated January 15, 1998, is incorporated herein by reference to Exhibit 6 of Post-Effective Amendment No. 28 to the Registration Statement of American Century Target Maturities Trust, filed on January 30, 1998. EX-99.9 Global Custody Agreement between The Chase Manhattan Bank and the Twentieth Century and Benham funds, dated August 9, 1996, is incorporated herein by reference to Exhibit 8 to Post-Effective Amendment No. 31 of American Century Government Income Trust filed on February 7, 1997. EX-99.10a Master Distribution and Shareholder Services Plan of American Century Government Income Trust, American Century International Bond Fund, American Century Target Maturities Trust and American Century Quantitative Equity Funds (Advisor Class) dated August 1, 1997, is incorporated herein by reference to Exhibit 15 of Post-Effective Amendment No. 27 to the Registration Statement of American Century Target Maturities Trust filed on August 28, 1997. EX-99.10b Multiple Class Plan of American Century California Tax-Free and Municipal Funds, American Century Government Income Trust, American Century International Bond Funds, American Century Investment Trust, American Century Municipal Trust, American Century Target Maturities Trust and American Century Quantitative Equity Funds dated August 1, 1997, is incorporated herein by reference to Exhibit 18 of Post-Effective Amendment No. 27 to the Registration Statement of American Century Target Maturities Trust, filed on August 28, 1997. EX-99.11 Opinion and Consent of Counsel as to the legality of the securities being registered is filed herein. Ex-99.12 Opinion and Consent of Counsel as to the tax matters and consequences to shareholders (to be filed by amendment). EX-99.13 Transfer Agency Agreeement between American Century Investment Trust and American Century Services Corporation dated August 1, 1997, is incorporated herein by reference to Exhibit 9 of Post-Effective Amendment No. 33 to the Registration Statement of American Century Government Income Trust filed on July 31, 1997. EX-99.14a Consent of Deloitte & Touche LLP is filed herein. EX-99.14b Consent of Coopers & Lybrand is filed herein. EX-99.14c Consent of Baird, Kurtz and Dobson (to be filed by amendment). EX-99.14d Consent of KPMG Peat Marwick (to be filed by amendment). EX-99.16 Power of Attorney dated January 15, 1998 is filed herein. EX-99.17a Form of Proxy is filed herein. EX-99.17b Prospectus dated March 1, 1998, for American Century - Benham Cash Reserve Fund filed as part of Post-Effective Amendment No. 78 to the Registration Statement of American Century Mutual Funds, Inc. on February 26, 1998 , is incorporated herein by reference. EX-99.17c Statement of Additional Information dated March 1, 1998, for American Century - Benham Cash Reserve Fund filed as part of Post-Effective Amendment No. 78 to the Registration Statement of American Century Mutual Funds, Inc. on February 26, 1998, is incorporated herein by reference. EX-99.17d Prospectus dated July 1, 1997, for American Century - Benham Prime Money Market Fund filed as a part of Post-Effective Amendment No. 5 to the Registration Statement of American Century Investment Trust on June 27, 1997, is incorporated herein by reference. EX-99.17e Statement of Additional Information dated July 1, 1997, revised August 1, 1997, for American Century - Benham Prime Money Market Fund filed pursuant to Rule 497(e) on July 30, 1997, is incorporated herein by reference. EX-99.17f Annual Report dated October 31, 1997, for American Century - Benham Cash Reserve Fund filed on December 29, 1997, is incorporated herein by reference. EX-99.17g Annual Report dated October 31, 1996, for American Century - Benham Cash Reserve Fund filed on December 23, 1996, is incorporated herein by reference. EX-99.17h Annual Report dated February 28, 1997, for American Century - Benham Prime Money Market Fund filed on April 23, 1997, is incorporated herein by reference. EX-99.17i Semiannual Report dated August 31, 1997, for American Century - Benham Prime Money Market Fund filed on October 29, 1997, is incorporated herein by reference.