Pierson B. Reading began his career as a clerk, explorer, and chief of trappers in the service of General Sutter. He commanded Sutter's Fort during the winter of 1844-45 and participated in the Bear Flag Revolt. Reading served as Paymaster of the California Battalion with the rank of Major during the Mexican–American War. He engaged in gold prospecting following the 1848 gold discovery and operated a store in Sacramento. Reading also contested for the governorship and U.S. Senate, and pursued a land grant claim in Washington, D.C.

Pierson B. Reading's political identity is marked by an intriguing blend of frontier ruggedness and legal rigor, as evidenced by his extensive gold prospecting and his pursuit of a land grant through the US Supreme Court. His military engagements in the Bear Flag Revolt and the Mexican-American War juxtapose with his political aspirations as a Whig candidate, hinting at a complex ideological positioning. Reading's approach to regional economic development and property rights reveals a highly localized strategic philosophy.