Rather than specializing, Lincoln practiced general law, and so we see him taking on both civil and criminal cases, with breaches of contract and patent infringements sharing space with bootlegging, assault, even murder cases. Much of his work concerned debt collection, for which Lincoln was known well beyond Illinois, and these cases provide a unique window on nineteenth-century business. Lincoln also went out on the road twice yearly to try cases in the state’s circuit courts; this edition documents some of these tours in detail.

The cases represented paint a vivid picture of America in the decades leading up to the Civil War. The nation's surging expansion is reflected in cases over land speculation, property disputes, construction, and, of course, the railroads, whose interests are a consistent theme throughout. Other trials touch on domestic law, the Black Laws, even the California gold rush.