The Incredible Hulk #189

Published by Marvel Comics in July 1975, The Incredible Hulk #189 represents a significant transitional period for the title during the mid-1970s. The issue was written by Len Wein and featured artwork by Herb Trimpe, a quintessential Hulk artist whose long tenure on the character helped define the visuals of the era. The story continues the series' exploration of Bruce Banner's internal struggle and his ongoing attempts to find a cure for his transformation, set against a backdrop of escalating conflicts with government agencies and superhuman entities.

The issue features a cover and interior pages crafted in the classic Marvel style of the Bronze Age, emphasizing high-stakes action and melodramatic internal monologue. While this specific issue is not a landmark 'first appearance' or a major key, it is highly valued by collectors for its contribution to the narrative consistency of the era. It captures the essence of the character’s post-Vietnam War era identity, reflecting the darker, more paranoid tone that permeated much of Marvel's storytelling during that time.