State-of-Knowledge Investigations

History Associates excels in state-of-knowledge investigations critical for businesses facing litigation, regulatory scrutiny, or coverage disputes.

2026 Chambers Ranked in Litigation Support | History Associates badge
For over 45 years, HAI has helped law firms, corporations, and government agencies uncover the historical facts in support of complex litigation. Our experts deliver clear, defensible research grounded in verifiable sources, from site histories and state-of-knowledge investigations to product liability and corporate genealogy research.
Talk to a Litigation Research Expert

History Associates’ Litigation Support team has completed more than 1,500 historical research investigations. We have extensive experience delivering perspective and insight in support of the most complex legal matters, and our legal clients count on us with confidence.

History Associates excels in state-of-knowledge investigations critical for businesses facing litigation, regulatory scrutiny, or coverage disputes. Our expert team of historians assists law firms, corporate counsel, and insurance providers in evaluating what individuals, organizations, or industries knew about certain products, processes, and issues at specific points in time.

Our expert team examines historical and contemporary sources, including scientific studies, industry standards, patents, regulatory documents, and internal company records to establish a timeline of awareness grounded in primary-source documentation. By leveraging our expertise in navigating federal, state, local, and corporate archives, the Litigation Support team uncovers sources that provide attorneys with an understanding not only of what information was known and when but also which parties had access to it.

With this knowledge, HAI’s clients can establish the level of awareness and timeline of institutional knowledge of harms, risks, and processes within an industry. Besides providing sought-after documents, our team has synthesized findings into various formats, including chronological timelines, interactive demonstratives, and expertly written narrative reports. These detailed, well-documented findings enable clients to build robust legal defenses, demonstrate due diligence, and mitigate liability risks.

Our expertise in State-of-Knowledge Investigations spans:

Known Contaminants

  • Asbestos
  • Talc
  • Chlorinated solvents
  • Trichloroethylene (TCE)
  • 1,1,1-Trichloroethane (TCA)
  • 1,4-Dioxane
  • Carbon tetrachloride
  • Dichloro-diphenyl-trichloroethane (DDT)
  • Perchlorates
  • Polychlorinated biphenyls (PCBs)

PFAS, PFOA, and PFOS Investigations

  • Per- and poly-fluoroalkyl substances (PFAS)
  • Perfluorooctanoic acid (PFOA)
  • Perfluorooctane sulfonate (PFOS)

Industrial Practices

  • Corporate Knowledge of Harms and Risks
  • Coal Ash Disposal Site Histories
  • Manufactured Gas Plant (MGP) Operations

Let us be your litigation support solution.

Jason H. Gart, PhD

Jason H. Gart

Vice President

JGart@historyassociates.com
301.279.9697

Kim Silvi

Kim Silvi

Senior Manager

ksilvi@historyassociates.com
301.279.9697

Interested in learning more about our professional services or scheduling a consultative call?

We take the time to listen and help you make smart decisions that best meet your needs.

HAI | History Associates Incorporated color logo
History Associates Incorporated is the proven partner organizations turn to for archival services, historical research, and litigation support services when they need to preserve, interpret, and activate their history and heritage. 
We’ve collaborated with thousands of corporate, legal, and government organizations.

45+ Years of Litigation Experience

Supporting law firms, corporations, and government agencies nationwide.

Thousands of Legal Matters Supported

We provide critical research and expert services in complex and high-stakes litigation, transactional, and regulatory matters.
Chambers Recognized Experts

Historians, researchers, archivists, and subject‑matter experts with deep experience, respected credentials, and proven value delivery.

Defensible, Court-Ready Research

Trusted in federal, state, and administrative proceedings.

Why Legal Teams Trust HAI

  • Defensible Research, Delivered Clearly: We turn complex historical evidence into clear, litigation‑ready findings.
  • Sought After Across Industries
    Our client base includes aerospace, defense, energy, transportation, insurance, financial services firms, as well as numerous other industries.
  • Discreet Researchers
    We can be relied on to work on the most sensitive legal cases.
  • Access to Hard to Find Sources
    We travel across the globe to find dispositive records in a wide variety of archives, libraries, government offices, and private collections.
  • Expert Witnesses, You Can Rely On
    Our experts provide insight, rigor, and clarity to the most challenging research questions.
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