Where To Even Start With This Research
The office of the Attorney General has existed since 1789, which means you are dealing with over two centuries of records, some of which are well organized and some of which are basically a box of loose papers in the National Archives that someone labeled "miscellaneous" in 1953. I spent about three weeks last year trying to track down opinion memoranda from the early 1900s for a project on antitrust enforcement, and let me tell you, the Digital Library of America has a lot, but it is not complete. The opinions themselves are scattered across print volumes, microfilm, and increasingly digitized formats that still require actual searching skills rather than just typing a name into a box. The basic structure is straightforward. Each Attorney General serves at the pleasure of the President, which means appointments tend to cluster around political shifts rather than forming any neat chronological narrative. But the real work of understanding this office historically requires looking past the names and dates and actually examining what these people did while they held power. The opinions they wrote shaped entire areas of law. The enforcement priorities they set defined federal policy for years after they left office. I ran into a specific problem last year when I was trying to cross-reference Attorney General opinions with actual court decisions that cited them. The Justice Department's own historical database, the Opinions of the Attorney General database, is solid for anything after 1970 or so, but before that you are often working with OCR'd text that contains errors, and sometimes entire opinions are missing from the digital record. The workaround I ended up using was to pull the original bound volumes from the University of Michigan's HathiTrust digital library, which has higher quality scans than most sources, and then manually cross-check citations against the Federal Reporter using Westlaw. It took longer, but it was the only way to catch the instances where the digital versions had dropped entire footnotes or merged two separate opinions into one entry due to scanning errors.
Key Periods That Actually Matter
Most people studying this material focus on the famous Attorneys General like John Mitchell or Edwin Meese because they were involved in scandals or high profile cases. That is fine if you want a readable narrative, but if you actually want to understand how the office evolved, you need to look at the unglamorous periods. The Reconstruction era Attorneys General were building federal enforcement capacity from scratch while dealing with an Supreme Court that actively wanted to limit federal power. The Progressive Era saw the office become a real regulatory actor rather than just a legal advisor to the executive branch. One thing that surprised me when I dug into the records from the 1880s through the 1910s is how much the Attorney General's office functioned as a de facto supreme court on many domestic legal questions before the modern administrative state fully developed. The opinions from that period read less like legal analysis and more like policy statements, because in many ways they were. Robert Jackson, before he went to the Supreme Court, served as Attorney General from 1940 to 1941 and his opinions on executive privilege and wartime powers are still cited today. But even more interesting are the lesser known figures like George W. Wickersham under Harding, who pushed for professionalization of the Justice Department and created many of the organizational structures that still exist.
Practical Research Approaches
If you are doing actual historical research rather than just reading summaries, here is what works. Start with the Official Corporation of the United States Attorneys and their jurisdictional changes over time, because the AG's role shifted dramatically when Congress created new federal agencies and gave them enforcement authority. The transition from the late 19th century to the New Deal era is particularly important because that is when the Attorney General went from being primarily a legal advisor to becoming a policy maker with substantial independent authority. The biographical resources are adequate but uneven. The Attorney General's Office historical page on Justice.gov has a list with brief bios, but the details vary enormously depending on which era the person served in. For pre 1950s figures, the best source is usually the finding aids at the National Archives, specifically Record Group 60, which contains the records of the United States Courts and related materials. The National Archives also holds the personal papers of many Attorneys General, though access varies and some collections are not fully processed. I found that the most useful approach for understanding the actual impact of any given Attorney General is to trace the doctrinal lineage of the legal principles they established. Take for example the concept of corporate liability for criminal acts. You can read summaries all day, but if you actually follow the chain of opinions from through the 1940s, you see a clear evolution in how the Justice Department approached the question of whether corporations could be held criminally responsible. The happens in the 1940s under Francis Biddle and Tom C. Clark, and tracing those opinions through the subsequent court challenges gives you a much clearer picture than any textbook summary.
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Common Mistakes People Make
The biggest error I see is treating the Attorney General's office as a monolith throughout history. It was not. The scope of the office's authority, its relationship to the President, and its role in the legal system have changed dramatically. An Attorney General in 1830 had almost no staff and little institutional power compared to the modern office with tens of thousands of employees. Equating the two is like comparing a solo practitioner to a major law firm. Another issue is relying too heavily on secondary sources that repeat the same narratives without checking the primary documents. The literature on certain Attorneys General, particularly those associated with scandals, tends to be thin on detail and heavy on interpretation. I had to correct a published account that claimed a particular opinion was issued during a specific administration when the actual document dated to a different year entirely. The error propagated through several subsequent works before someone actually checked the original opinion. The digital transition has made research easier in many ways but introduced new problems. Many digitized collections contain OCR errors that create false positives when you search. A name might appear in a document but the spelling could be slightly off, or the context could be completely different from what you expect. I learned to always verify that a hit actually contains the information you think it does rather than assuming the search result is accurate. This usually adds about twenty minutes per lead, but it prevents going down entirely wrong paths based on garbled text.
What To Use And What To Skip
The federal reporter system, both in print and digital, remains the most reliable source for finding how AG opinions were received by the courts. Google Scholar's case law database is surprisingly decent for older opinions, though the coverage is incomplete for the earliest periods. For the actual text of opinions, the University of Michigan's compilation is better than most free sources because it includes the full pagination and proper formatting. For biographical information, the biographical directory of the United States Congress is useful for the appointees who previously served in Congress, but it skips a lot of detail. The Federal Judicial Center's database is more comprehensive for those who later became judges. The Justice Department's own historical office publishes occasional brochures and guides that are surprisingly thorough for specific eras, though they tend to be more celebratory than analytical. One resource that is severely underutilized is the annual report of the Attorney General. These were mandatory publications for much of the 19th and early 20th centuries, and they contain a tremendous amount of information about caseloads, enforcement priorities, and internal operations. They are available through HathiTrust and the Internet Archive, but most researchers skip them because they look dry. They are exactly what you should be reading if you want to understand what the office actually did rather than what people say it did.
The Gaps In The Record
Let me be blunt about what you will not find. The records from the early republic are fragmentary. Many opinions were never published during the Attorney General's tenure and only survived because someone collected them later. The Civil War era is particularly problematic because the office was understaffed and record keeping was inconsistent. Several Attorneys General from that period left very little documentary trace of their actual decision making. The Cold War era has its own issues. Classification restrictions mean that much of the Attorney General's work during that period, particularly around internal security and surveillance, remains inaccessible or only partially available through FOIA requests that can take years to process. I filed a request for records related to a specific AG's handling of subversive activities in the 1950s and it took eighteen months and three separate appeals before I got anything substantial, and even then large portions were redacted. For anyone doing serious historical work on this topic, the bottom line is that the sources exist but they require patience and a willingness to verify everything you find. The narratives are easy to find. The details are harder to get, and the gaps are significant. If you approach the material with the expectation that you will discover something new rather than confirm what you already read, you will probably be right.
