Rocky mountain bankcard Sued by Susan Sternberg of Lincoln, Nebraska. for unsolicited credit card. Post Je 29, 1978 p.82 Card holders affiliated with Colorado National Bank receive mailing from insurance co. using charge card number. RMN F 23, 1981 p.6 No change, yet, for card holders but Rocky Mountain Bankcard System is watching interest rates. DBW Je 22, 1981 p.3 New custanized credit card for Coloradoans. RM N 10, 1987 p.8B