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

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
Vice President
JGart@historyassociates.com
301.279.9697

Kim Silvi
Senior Manager
ksilvi@historyassociates.com
301.279.9697
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45+ Years of Litigation Experience
Supporting law firms, corporations, and government agencies nationwide.
Thousands of Legal Matters Supported
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.
Explore Our Case Studies

Corporate Genealogy Research

Investigating Environmental Claims

Product Liability Cases
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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