diff --git a/metadata-readme/Historical-postcards-metadata-readme.md b/metadata-readme/Historical-postcards-metadata-readme.md
index 2648857a244329912e84488178f29c6b9cd1cd57..f1442d1a58dfc7751f095de667b1e9d6bd48dec7 100644
--- a/metadata-readme/Historical-postcards-metadata-readme.md
+++ b/metadata-readme/Historical-postcards-metadata-readme.md
@@ -23,11 +23,11 @@ Please note that the CSV is an export of keys and values of the Relational Datab
 | signature | informations on attributions to former collections or subcollections; may contain information on provenance; please note the abbrevations | some | string |
 | revision_date | timestamp of last revision of metadata in the RDB Kawan | most | date |
 | date | combination of year and comment, "gelaufen" and "vor" are usually not abbreviated in this field | most | string |
-| feature_class | code of the GeoNames export codes[https://www.geonames.org/export/codes.html]  | most | string |
-| feature_code | code of the GeoNames export codes[https://www.geonames.org/export/codes.html] | most | string |
+| feature_class | code of the GeoNames export codes https://www.geonames.org/export/codes.html  | most | string |
+| feature_code | code of the GeoNames export codes https://www.geonames.org/export/codes.html | most | string |
 | geoname_id | GeoName identifier of placename (attribute: "name"), if a placename has been identified | most | float |
-| latitude |  | most | float |
-| longitude | | most | float |
+| latitude | geolocation latitude as provided by GeoNames | most | float |
+| longitude | geolocation longitude as provided by GeoNames | most | float |
 | name | placename of place identified (GeoName ID is in attribute "geoname_id") | most | string |
 | country_id | code for country (modern) within which borders the identified placename lies today; the form is ISO-3166 Alpha-2 code | most | string |
 | admin_name_1 | | some | string |