In 2003, my mother applied to the Alberta Registries for the death records for her uncle. The resulting information packet contained a cover letter, a certified photographic print of the "Medical Certificate of Cause of Death" and the "Registration of Death". I inherited this material in 2018 and am still trying to address its documentation and filing.
While the cover letter provides what appears to be registry records search parameters, it does not seem to supply any additional historical info. It does, however, provide some info of evidential/analytical value in the form of the Name of the Requestor, the Registry's print-issue date and service request number.
I am trying to "cure" myself of being an "information packrat". So; I am wondering whether I really need to retain the covering letter and envelope on file, once I've incorporated any relevant information into a citation for the individual certified photographic prints.
I see the same retention issue being likely to occur when addressing some of the clippings received from a research request to a genealogical society.
Have you any advice on how to determine what to keep on file for such "packaged information"?