diff --git a/openff/toolkit/topology/molecule.py b/openff/toolkit/topology/molecule.py
index 24097677c..6710dd7ba 100644
--- a/openff/toolkit/topology/molecule.py
+++ b/openff/toolkit/topology/molecule.py
@@ -2573,6 +2573,7 @@ def assign_partial_charges(
         Supported charge methods vary from toolkit to toolkit, but some
         supported methods are:
 
+        - ``"openff-gnn-am1bcc-1.0.0.pt"``, codename "AshGC"
         - ``"am1bcc"``
         - ``"am1bccelf10"`` (requires OpenEye Toolkits)
         - ``"am1-mulliken"``
@@ -2583,7 +2584,9 @@ def assign_partial_charges(
         in the charge calculation. Instead, any conformers needed for
         the charge calculation are generated by this method. If this
         behavior is undesired, specific conformers can be provided via the
-        ``use_conformers`` argument.
+        ``use_conformers`` argument. These options do not apply to charges
+        generated from graph-convolutional neural networks (GCNNs) like
+        AshGC, which do not use conformers at all.
 
         ELF10 methods will neither fail nor warn when fewer than the
         expected number of conformers could be generated, as many small
@@ -2597,6 +2600,8 @@ def assign_partial_charges(
         For more supported charge methods and their details, see the
         corresponding methods in each toolkit wrapper:
 
+        - :meth:`NAGLToolkitWrapper.assign_partial_charges \
+          <openff.toolkit.utils.toolkits.NAGLToolkitWrapper.assign_partial_charges>`
         - :meth:`OpenEyeToolkitWrapper.assign_partial_charges \
           <openff.toolkit.utils.toolkits.OpenEyeToolkitWrapper.assign_partial_charges>`
         - :meth:`RDKitToolkitWrapper.assign_partial_charges \
@@ -2606,6 +2611,11 @@ def assign_partial_charges(
         - :meth:`BuiltInToolkitWrapper.assign_partial_charges \
           <openff.toolkit.utils.toolkits.BuiltInToolkitWrapper.assign_partial_charges>`
 
+        For more on some charge methods supported by SMIRNOFF force fields such as Sage,
+        see the following sections of the SMIRNOFF specification:
+
+        .. _NAGLCharges: https://openforcefield.github.io/standards/standards/smirnoff/\
+            #naglcharges-use-a-specified-nagl-model-file-for-charge-assignment
         .. _ToolkitAM1BCC: https://openforcefield.github.io/standards/standards/smirnoff/\
             #toolkitam1bcc-temporary-support-for-toolkit-based-am1-bcc-partial-charges
 
@@ -2633,6 +2643,11 @@ def assign_partial_charges(
         Examples
         --------
 
+        Assign AshGC charges to a long alkane:
+
+        >>> c200 = Molecule.from_smiles(200 * "C")
+        >>> c200.assign_partial_charges("openff-gnn-am1bcc-1.0.0.pt")
+
         Generate AM1 Mulliken partial charges. Conformers for the AM1
         calculation are generated automatically: