Ida Minerva Tarbell (1857–1944) was a pioneering investigative journalist, biographer, and lecturer whose name became synonymous with the muckraking era of journalism. Born in Erie County, Pennsylvania, Tarbell was a leading figure among journalists who aimed to expose corruption in politics and business. Her two-volume opus, 'The History of the Standard Oil Company (Illustrated)', published in 1904, is considered a seminal work that chronicled the rise of John D. Rockefeller's monopoly and the unethical practices that underpinned his business empire. This groundbreaking investigation contributed significantly to the dissolution of Standard Oil under antitrust laws. Known for her meticulous research and clear, detailed prose, Tarbell's literary style married factual reporting with compelling narrative, changing the face of American journalism. She stood for the social reforms of the progressive era, advocating for issues such as workers' rights and women's suffrage. An influential woman in her own right, Tarbell broke barriers in a male-dominated profession and left an indelible mark on both literature and journalism through her deep commitment to truth and ethical writing. Her legacy continues to inspire generations of journalists and writers who seek to illuminate the darker corners of industry and governance.