The mere fact that requested documents might incriminate the person producing them does NOT give the target of the request a privilege not to produce. Rather, the ACT OF PRODUCING the documents must incriminate the target either by (1) authenticating the documents OR (2) showing their existence OR (3) showing possession. See example on page 8 of big Kentucky outline. 2. This also goes for record keeping requirements that agencies impose on the entities within their field. Ie, you cannot claim fifth amendment privilege against self incrimination and refuse to turn over records that agency requires of you.