diff --git a/packages/gatsby-source-filesystem/README.md b/packages/gatsby-source-filesystem/README.md
index 233cfad304160..90251fbc60952 100644
--- a/packages/gatsby-source-filesystem/README.md
+++ b/packages/gatsby-source-filesystem/README.md
@@ -175,3 +175,5 @@ exports.downloadMediaFiles = ({ nodes, store, cache, createNode, _auth }) => {
   });
 };
 ```
+
+The file node can then be queried using GraphQL. See an example of this in the [gatsby-source-wordpress README](/packages/gatsby-source-wordpress/#image-processing) where downloaded images are queried using [gatsby-transformer-sharp](/packages/gatsby-transformer-sharp/) to use in the component [gatsby-image](/packages/gatsby-image/).