Section J-1, which is labelled in the Guyana Index as “Medical Records” –– consists of 131 pages. The complete PDF for this section as released by the FBI is here.
This file consists of Jonestown pharmacy inventory records of prescription drugs, including the dates that the drugs were dispensed and the amounts left on hand. None of the listings indicate who dispensed or received the drugs.
The file is in the PDF format, and none of the pages has been transcribed.
The citation for these documents should open with the FBI’s official designation of these records, which is “RYMUR 89-4286.” Each individual page in these records has a unique number. Page 13 of this document, for example, is marked “J-1-A2j”. The complete citation for that page, then, would be “RYMUR 89-4286-J-1-A2j”.