Historian Waddy W. Moore uses court records to show that on the sparsely settled Arkansas frontier lawlessness was common. He distinguished two types of crimes: unprofessional (dueling, crimes of drunkenness, selling whiskey to the Indians, cutting trees on federal land) and professional (rustling, highway robbery, counterfeiting). Criminals found many opportunities to rob pioneer families of their possessions, while the few underfunded lawmen had great difficulty detecting, arresting, holding, and convicting wrongdoers. Bandits, typically in groups of two or three, rarely attacked stagecoaches with a guard carrying a sawed-off, double-barreled shotgun; it proved less risky to rob teamsters, people on foot, and solitary horsemen, while bank robberies themselves were harder to pull off due to the security of the establishment. According also to historian Brian Robb, the earliest form of organized crime in America was born from the gangs of the Old West.