Denver. Taxation. Income tax Objections to proposed Denver income tax stated. RMN Aug. 18, 1957 p.5 Graduated tax plan filed with city council. Post Aug. 23, 3957 p.1 Clips: Denver. Taxation, Income Tax Chamber of coerce votes 12-1 against income tax. RMN Aug. 34, 1957 p.5 Collecting city tax will be costly - 8.8 on the dollar during let year. RMN Aug. 30, 1957 p.2D Robert Six and Mayor Nicholson split on tax issue. Post Sept. 1, 1957 p.3A