The tag letter-john-ec appears in these 3 comics:

• 4304: File, Unfortunately, Found (Tags: beepatrice, winslow, nelson, letter-john-ec)
• 4305: Toot Toot (Tags: beepatrice, basilisk, winslow, nelson, letter-john-ec)
• 4306: Breathtaking Innovation (Tags: beepatrice, basilisk, winslow, letter-john-ec)