ADV [usually ADVERB with verb] [oft n ADV, ADVERB n]随本文（或本书）附上;随信附上Herewith means with this document, text, or book. You can use herewith in a letter to say that you are enclosing something with it. 随本文（或本书）附上;随信附上 [formal, written]
...the 236 revolutionary prisoners whose names are listed herewith.