diff --git a/src/fiber_package/action/request/list.py b/src/fiber_package/action/request/list.py
index 40dfe58..82958ef 100644
--- a/src/fiber_package/action/request/list.py
+++ b/src/fiber_package/action/request/list.py
@@ -2,9 +2,26 @@ from pydantic import BaseModel, UUID7
 
 from fiber_package.membership_tag import Membership
 
-ListPeopleResponse = list[BaseModel]
+# List People
 
 class ListPeopleRequest(BaseModel):
     association_tag: str
     membership: Membership
-    query: str | None
+    query: str | None = None
+
+ListPeopleResponse = list[BaseModel]
+
+# List Committees
+
+class ListCommitteesRequest(BaseModel):
+    association_tag: str
+    query: str | None = None
+
+ListCommitteesResponse = list[BaseModel]
+
+# List Committee Editions
+
+class ListCommitteeEditionsRequest(BaseModel):
+    committee: UUID7
+
+ListCommitteeEditionsResponse = list[BaseModel]
\ No newline at end of file
diff --git a/src/fiber_package/committee/committee.py b/src/fiber_package/committee/committee.py
index 4b57b21..3c9f38a 100644
--- a/src/fiber_package/committee/committee.py
+++ b/src/fiber_package/committee/committee.py
@@ -1,9 +1,10 @@
-from pydantic import model_validator, UUID7
+from pydantic import model_validator, UUID7, computed_field
 
 from fiber_package.refs import (
     CommitteeEditionRef,
     CommitteeEditionRefList,
-    EntityRefList
+    EntityRefList,
+    AssociationRef
 )
 from fiber_package.base import FiberBaseModel
 
@@ -21,6 +22,9 @@ An edition is a definite group of members with functions and a timespan.
 class CommitteeModel(FiberBaseModel):
     collection_name: Literal["committee"] = "committee"
 
+    association: AssociationRef
+
+    short_name: str
     full_name_en: str
     full_name_nl: str
     description_en: str = ""
@@ -47,12 +51,27 @@ class CommitteeEditionModel(FiberBaseModel):
     members: EntityRefList
     functions: dict[UUID7, str]
 
+    remarks: str = ""
+
     start_date: date
     end_date: date | None # None means ongoing
 
+    @computed_field
+    @property
+    def edition_string(self) -> str:
+        start_year = self.start_date.year
+        if self.end_date is None:
+            return f"{start_year} - "
+        else:
+            end_year = self.end_date.year
+            if end_year == start_year:
+                return f"{start_year}"
+            else:
+                return f"{start_year} - {end_year}"
+
     @model_validator(mode='after')
     def functions_to_members_only(self) -> Self:
         for uuid in self.functions:
             if uuid not in self.members:
-                raise ValueError("Cannot only assign functions to committee members")
+                raise ValueError("Can only assign functions to committee members")
         return self