diff --git a/README.md b/README.md
index 4f000cf..c65a02d 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ by KBase apps to fetch data from the database.
 * **Schemas** are [JSON schemas](https://json-schema.org/) that define what form of data can be stored in
 the database's collections.
 * **Migrations** are python modules that connect to the database and are responsible for transitioning the data in a collection from an old schema to a newer one.
+* **Data sources** (in `data_sources/`) contains some general information about where some of our imported data comes from.
 
 ## Development
 
diff --git a/data_sources/envo_ontology.yaml b/data_sources/envo_ontology.yaml
new file mode 100644
index 0000000..0b138c3
--- /dev/null
+++ b/data_sources/envo_ontology.yaml
@@ -0,0 +1,6 @@
+name: envo_ontology
+category: ontology
+title: Environment Ontology
+home_url: http://www.obofoundry.org/ontology/envo.html
+data_url: https://github.com/EnvironmentOntology/envo/releases
+logo_path: /images/third-party-data-sources/envo/logo-119-64.png
diff --git a/data_sources/go_ontology.yaml b/data_sources/go_ontology.yaml
new file mode 100644
index 0000000..21cbfad
--- /dev/null
+++ b/data_sources/go_ontology.yaml
@@ -0,0 +1,6 @@
+name: go_ontology
+category: ontology
+title: Gene Ontology
+home_url: http://geneontology.org/
+data_url: http://release.geneontology.org/
+logo_path: /images/third-party-data-sources/go/logo-248-64.png
diff --git a/data_sources/gtdb_taxonomy.yaml b/data_sources/gtdb_taxonomy.yaml
new file mode 100644
index 0000000..8dd8e5a
--- /dev/null
+++ b/data_sources/gtdb_taxonomy.yaml
@@ -0,0 +1,6 @@
+name: gtdb_taxonomy
+category: taxonomy
+title: GTDB Taxonomy
+home_url: https://gtdb.ecogenomic.org
+data_url: https://data.ace.uq.edu.au/public/gtdb/data/releases/
+logo_path: /images/third-party-data-sources/gtdb/logo-128-64.png
diff --git a/data_sources/ncbi_taxonomy.yaml b/data_sources/ncbi_taxonomy.yaml
new file mode 100644
index 0000000..37a8819
--- /dev/null
+++ b/data_sources/ncbi_taxonomy.yaml
@@ -0,0 +1,6 @@
+name: ncbi_taxonomy
+category: taxonomy
+title: NCBI Taxonomy
+home_url: https://www.ncbi.nlm.nih.gov/taxonomy
+data_url: ftp://ftp.ncbi.nlm.nih.gov/pub/taxonomy/
+logo_path: /images/third-party-data-sources/ncbi/logo-51-64.png
diff --git a/data_sources/rdp_taxonomy.yaml b/data_sources/rdp_taxonomy.yaml
new file mode 100644
index 0000000..ffef460
--- /dev/null
+++ b/data_sources/rdp_taxonomy.yaml
@@ -0,0 +1,6 @@
+name: rdp_taxonomy
+category: taxonomy
+title: Ribosomal Database Project
+home_url: http://rdp.cme.msu.edu/taxomatic/main.spr
+data_url: http://rdp.cme.msu.edu/misc/resources.jsp
+logo_url: /images/third-party-data-sources/ncbi/logo-51-64.png