Step into the formative decades of West Coast industrial science with this authentic 1929–1949 chemistry ephemera and document lot from Curtis & Tompkins, Ltd. of San Francisco. Founded in 1878, Curtis & Tompkins served as the benchmark laboratory for commercial analysis, sampling, and chemical engineering across Northern California's ports and manufacturing hubs. This diverse archive gathers period materials spanning two decades, including vintage photographs of testing operations, official laboratory reports, and technical documentation from the interwar through post-WWII eras. The collection is pre-owned and remains in clean, well-preserved vintage condition. The paper materials, bindings, and photographs are stable, intact, and fully readable, displaying expected light signs of age, handling, subtle margin toning, and minor edge wear typical of century-old industrial archives. A standout acquisition for collectors of San Francisco history, chemistry and science ephemera, or early California commercial archives. Please inspect all provided photos closely for complete details on the individual pieces and exact conditions.

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