FDLP logo |
Federal documents are classified by what is called the Superintendent of Documents Classification Scheme. Each document is given a SuDoc Number which consists of a combination of letters and numbers that indicate the Agency (and any sub-agencies) responsible for its creation, as well as information about what type of document it is or what its serial/series title is and any other information necessary for distinguishing it from other publications. If you really want to get into the details of the system, you can read all about it here: Introduction to the Classification Guidelines | FDLP
Diagraming the number helps me understand what I’m reading whenever I come across a federal publication. For example, the publication titled, Wildflowers of the Savannah River Site has a SuDoc number of A 13.150:W 64. This SuDoc number was taken from Structure of the Classification Number | FDLP which has a way more detailed explanation than what I’m about to provide.
Basic anatomy of a SuDoc Number:
This document was published by the Agriculture Department (A), specifically the Forest Service (13.), and that it is a general publication from the Southern Research Station (150:). The W 64 indicates the individual publication/book number.
In Massachusetts, the Public Document Series also had a classification scheme of sorts and in the Mass Room located within our library’s stacks, state documents are organized by a homemade classification scheme our predecessors invented.
In Massachusetts, the Public Document Series also had a classification scheme of sorts and in the Mass Room located within our library’s stacks, state documents are organized by a homemade classification scheme our predecessors invented.
Thankfully, there are tools to help navigate the SuDoc system. You can look up a SuDoc number in the Catalog of U.S. Government Publications (CGP) to find its title. Heads up – the GPO has a new search tool called DiscoverGov that is more user-friendly. It’s available here: DiscoverGov
If you find yourself doing federal research, some of these websites might come in handy:
** Note: this in no way is an exhaustive list of the branches of the federal government or federal agencies -- they also aren’t in any particular order.
GovInfo – Really, this should be your first stop when looking for federal material. You can find digital versions of the following types of material:
- Bills & Statutes
- Budget & Presidential Materials
- Regulatory Info
- Congressional Committee Materials
- . . . and more! (The list is long and already on their site so there isn’t really much of a point to me repeating it all here). Some highlights from the above categories include:
- Congressional Committees
- United States Statutes at Large (1789 – 2019)
- United States Code (1994 - 2023)
- Statute Compilations
- Compilation of Presidential Documents (1992 - Present)
- Public Papers of the Presidents of the United States (1929 – 1932, 1945 – 2016) Spoiler Alert: one of our February display cases in the library is going to feature our collection of these documents in honor of President’s Day – stay tuned!
Fraser – If you’re looking for primary sources on the economic history of the U.S., this is your go-to. FYI, they also have a nifty coloring book that you can download here.
United States Government Policy and Supporting Positions a.k.a. the “Plum Book” – this is another resource that you can find on GovInfo which has the ones from 1996 – 2024 digitized (although the publication started in 1960, with its proto-type starting in 1952). What’s so special about the book you ask? It contains the list of every presidentially appointable position in the Federal Government along with the names of the people in those positions. There are over 7,000 of these positions, so it’s a bit of a beast. You want to know who the Deputy Assistant Secretary for Civil Rights in the Office of Civil Rights within the Department of Education was in 1996? Check the Plum Book!
National Agricultural Library – if you are researching agriculture and related areas in the US, this library has tons of resources and materials in their digital collections.
As for the physical versions, you won’t find them in our catalog; however, our Reference Librarians can help you track down where physical copies can be accessed (most likely BPL). If you need research assistance, please contact us at Reference.Department@mass.gov
Maryellen Larkin
Reference & Government Documents Librarian