Agency opinion letter
Original research draft · October 2026
Working pattern
[Agency or official], [Letter identifier or subject], at [page] ([date]).
Capture from the source
Issuing office; addressee if relevant; letter number; date; scope
Check before you use it
Read factual assumptions and limitations before generalizing its conclusion.
Common error: A fact-specific letter may not establish a general rule for different circumstances.
Completed example
Agency, office, letter, recipient, assumptions, and limitation are fictional. The example establishes no real interpretive position or degree of deference.
Northmere Register Agency, Interpretive Services Office, Opinion Letter TRAIN-OL-25-8, at 3 (Sept. 9, 2025) (addressing Cedar Index Cooperative's stated arrangement).
Read the supplied source facts
Fictional packet TRAIN-A41 contains letter TRAIN-OL-25-8 from the Northmere Register Agency's Interpretive Services Office to Cedar Index Cooperative, dated September 9, 2025. Page 3 addresses the cooperative's proposed filing arrangement. The letter assumes that every submission is reviewed by a named supervisor and that no archival originals leave the facility. Its closing paragraph limits the response to the facts supplied. A draft memorandum applies the letter's conclusion to an unsupervised remote process, although those facts are different. The exercise provides the whole letter, including the request summary and limitations.
Why this works
Identify the issuing office as well as the agency and letter number. The pinpoint reaches the conclusion, but the surrounding analysis must preserve the assumptions on which it depends. The source card should pair page 3 with the request summary and limitation paragraph. A fact-specific response can be relevant by comparison without establishing that the same conclusion governs a materially different process. Revise the draft to state the actual arrangement considered and explain any analogy separately. The recipient's identity may matter because it helps locate the request and keeps the letter from appearing to be general guidance addressed to all regulated parties.
When the facts change
If a later letter withdraws this one, update the discussion of its status and identify the withdrawal. If the assignment concerns the unsupervised remote process, seek authority addressing that process instead of deleting the inconvenient assumptions from the summary. A web page collecting letters is a finding aid; cite and preserve the particular letter rather than the collection's home page alone.
Apply the receiving court or publication’s requirements. These working forms do not establish citation permission, precedential weight, or support for a legal proposition.