diff --git a/atlas/admin.py b/atlas/admin.py
index 7aa8871c..c5f644dd 100755
--- a/atlas/admin.py
+++ b/atlas/admin.py
@@ -1,6 +1,8 @@
 from django.contrib import admin
 from .models import (
     Case,
+    CaseDetail,
+    CaseCollection,
     Differential,
     Series,
     SeriesImage,
@@ -37,6 +39,8 @@ admin.site.register(SeriesFinding)
 admin.site.register(Differential)
 admin.site.register(PathologicalProcess)
 admin.site.register(Presentation)
+admin.site.register(CaseCollection)
+admin.site.register(CaseDetail)
 
 
 class DifferentialInline(admin.TabularInline):
diff --git a/atlas/migrations/0025_auto_20220321_1602.py b/atlas/migrations/0025_auto_20220321_1602.py
new file mode 100644
index 00000000..d7c0ef6a
--- /dev/null
+++ b/atlas/migrations/0025_auto_20220321_1602.py
@@ -0,0 +1,36 @@
+# Generated by Django 3.2.10 on 2022-03-21 16:02
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('atlas', '0024_alter_case_previous_case'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='CaseCollection',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255, unique=True)),
+                ('open_access', models.BooleanField(default=True, help_text='If a collection should be freely available to browse')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CaseDetail',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('sort_order', models.IntegerField()),
+                ('case', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='atlas.case')),
+                ('collection', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='atlas.casecollection')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='casecollection',
+            name='cases',
+            field=models.ManyToManyField(through='atlas.CaseDetail', to='atlas.Case'),
+        ),
+    ]
diff --git a/atlas/models.py b/atlas/models.py
index efc3e2ac..7e04ea14 100644
--- a/atlas/models.py
+++ b/atlas/models.py
@@ -530,3 +530,19 @@ class Series(models.Model):
             size += i.image.size
 
         return size
+
+
+class CaseCollection(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+
+    cases = models.ManyToManyField(Case, through="CaseDetail")
+
+    open_access = models.BooleanField(
+        help_text="If a collection should be freely available to browse", default=True
+    )
+
+class CaseDetail(models.Model):
+    case = models.ForeignKey(Case, on_delete=models.CASCADE)
+    collection = models.ForeignKey(CaseCollection, on_delete=models.CASCADE)
+
+    sort_order = models.IntegerField()
\ No newline at end of file