diff --git a/lametro/models.py b/lametro/models.py
index 5b48b878e..51155dbeb 100644
--- a/lametro/models.py
+++ b/lametro/models.py
@@ -740,8 +740,21 @@ def related_files(self):
 
         for item in agenda_items:
             for entity in item.related_entities.filter(bill__isnull=False):
-                bill_packet = BillPacket(bill=entity.bill)
-                related.extend(bill_packet.related_files)
+                try:
+                    related_bill = entity.bill
+                except LAMetroBill.DoesNotExist:
+                    # We configure event agenda items to return LAMetroBill
+                    # objects. Sometimes, agenda items concern bills that do
+                    # not meet criteria for display, e.g., the bill is private
+                    # or it does not appear on a published agenda. (See the
+                    # LAMetroBill manager for an exhaustive list of display
+                    # criteria.) In this case, trying to access the bill via
+                    # the event agenda item will raise this exception. Skip
+                    # adding those documents to the event packet.
+                    continue
+                else:
+                    bill_packet = BillPacket(bill=related_bill)
+                    related.extend(bill_packet.related_files)
 
         return related