Dunbar Jones Partnership, Des Moines, IA No description specified. 1-1 (1 Record) Documents Stp-E-C0159(32)--8I-15 - Archaeological Assessment T-Bone Trail, Cass County, Iowa -Sec. 22, T77N - R36W - Ldr #84 - Supplemental Archaeological Investigation for T-Bone Trail - Revised Connection Trail (2001)