This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Heinrich Christian Schumacher von Otto Speckter . de php pi PS digiID page action vonsuche creator Otto Speckter PDoldauto Beilage mit Schumacher's Portrait und Facsimile Astronomische Nachrichten No Altona Juli mentioned there on google de id oMAAAAcAAJ pg RAPA page columns books google Uploaded with Heinrich Christian