18 CFR 41.5 - Verification.
The facts stated in the memorandum must be sworn to by persons having knowledge thereof, which latter fact must affirmatively appear in the affidavit. Except under unusual circumstances, such persons should be those who would appear as witnesses if hearing were had to testify as to the facts stated in the memorandum.
Title 18 published on 2015-08-22.
No entries appear in the Federal Register after this date, for 18 CFR Part 41.