William S. Cowherd graduated from the University of Missouri with a Bachelor of Arts and subsequently earned a Bachelor of Laws. He began his legal career in 1882 and later formed his own law firm. Cowherd held various legal and public service positions, including prosecuting attorney and mayor of Kansas City. He transitioned to a congressional role, focusing on local economic development and infrastructure.

William S. Cowherd's political philosophy centers on local economic growth and legal pragmatism, marked by a surprising blend of progressive legal reforms and staunch enforcement of local regulations. His legislative focus on Missouri's infrastructure and business-friendly policies reveals a highly localized approach. Cowherd’s tenure as mayor and prosecuting attorney highlights a calculated balance between public safety and efficient governance. His legal career further underscores an unexpected alignment of progressive casework with traditional enforcement, suggesting a nuanced strategy in shaping regional interests.