diff --git a/doc/api/collections_api.rst b/doc/api/collections_api.rst
index 2a06c00a2ad1..19608e81a2e8 100644
--- a/doc/api/collections_api.rst
+++ b/doc/api/collections_api.rst
@@ -11,3 +11,12 @@
    :undoc-members:
    :show-inheritance:
    :inherited-members:
+
+.. autoclass:: _CollectionWithSizes
+   :no-members:
+   :members: get_sizes, set_sizes
+   :class-doc-from: class
+
+.. autoclass:: _MeshData
+   :no-members:
+   :class-doc-from: class
diff --git a/doc/missing-references.json b/doc/missing-references.json
index 5cc11217caad..a4bcf34b016a 100644
--- a/doc/missing-references.json
+++ b/doc/missing-references.json
@@ -143,38 +143,6 @@
     ]
   },
   "py:meth": {
-    "matplotlib.collections._CollectionWithSizes.set_sizes": [
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.barbs:180",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.broken_barh:85",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.fill_between:122",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.fill_betweenx:122",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.hexbin:218",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.pcolor:187",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.quiver:256",
-      "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.scatter:174",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.AsteriskPolygonCollection.set:45",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.CircleCollection.set:45",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.FillBetweenPolyCollection.set:46",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.PathCollection.set:45",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.PolyCollection.set:45",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.PolyQuadMesh.set:45",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.RegularPolyCollection.set:45",
-      "lib/matplotlib/collections.py:docstring of matplotlib.artist.StarPolygonCollection.set:45",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.barbs:180",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.broken_barh:85",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.fill_between:122",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.fill_betweenx:122",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.hexbin:218",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.pcolor:187",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.quiver:256",
-      "lib/matplotlib/pyplot.py:docstring of matplotlib.pyplot.scatter:174",
-      "lib/matplotlib/quiver.py:docstring of matplotlib.artist.Barbs.set:46",
-      "lib/matplotlib/quiver.py:docstring of matplotlib.artist.Quiver.set:46",
-      "lib/matplotlib/quiver.py:docstring of matplotlib.quiver.Barbs:213",
-      "lib/matplotlib/quiver.py:docstring of matplotlib.quiver.Quiver:292",
-      "lib/mpl_toolkits/mplot3d/art3d.py:docstring of matplotlib.artist.Path3DCollection.set:47",
-      "lib/mpl_toolkits/mplot3d/art3d.py:docstring of matplotlib.artist.Poly3DCollection.set:46"
-    ],
     "matplotlib.collections._MeshData.set_array": [
       "lib/matplotlib/axes/_axes.py:docstring of matplotlib.axes._axes.Axes.pcolormesh:168",
       "lib/matplotlib/collections.py:docstring of matplotlib.artist.PolyQuadMesh.set:17",