русский => английский Бизнес/Финансы Бизнес / Коммерция (в целом) Records Management

This particular passage is from the duties and responsibilities of a Corporate Secretary with regard to filing the minutes of shareholders meetings.
“В конце каждого дела подшиваются чистые бланки для заверительной надписп.“
What I have is “Blank letterheads are fastened at the end of each file for the certification of endorsement.” I’m not entirely satisfied with that. Any suggestions would be appreciated.