Exhibit 99.26 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-F KEY PERFORMANCE FACTORS November 30, 1998 Expected B Maturity 6/17/02 Blended Coupon 6.4624% Excess Protection Level 3 Month Average 5.45% November, 1998 5.78% October, 1998 6.10% September, 1998 4.47% Cash Yield 17.96% Investor Charge Offs 4.96% Base Rate 7.23% Over 35 Day Delinquency 5.37% Seller's Interest 9.39% Total Payment Rate 13.51% Total Principal Balance $40,339,382,471.40 Investor Participation Amount $706,000,000.00 Seller Participation Amount $3,787,462,952.91