The work opens with an exhaustive geographical and geological survey of Linn County, detailing the ancient formations, glacial epochs, and river valleys that shaped the region's topography and rich soil. It then transitions into the historical beginnings, tracing the arrival of the earliest white settlers, the establishment of county boundaries, and the formal organization of the judiciary and local government under territorial law. Detailed attention is given to the pioneer era, highlighting the difficulties of early travel, severe winters, and the scarcity of provisions, as well as the creation of the first roads, cabins, and primitive settlements. The narrative documents relations with the Winnebago, Sac, and Fox tribes, preserving firsthand recollections of peaceful coexistence and mutual aid alongside the hardships imposed by the frontier environment.
A significant portion is devoted to the era of outlaws, counterfeiters, and horse thieves, detailing the formation of protective associations, the dispensing of summary justice, and the notable trials that established order in the county. The text chronicles the rise of towns such as Marion and Cedar Rapids, the intense political and legal struggles surrounding the relocation of the county seat, and the eventual arrival of the railroad, which secured the region's economic dominance. Interspersed throughout are extensive historical rosters, including lists of early county officers, physicians, and members of the Old Settlers Association, preserving the names and experiences of those who built the foundation of modern Linn County.
