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:
SteinitzZukertort. en Engraving made from photograph of chess players Steinitz and Zukertort playing in one of their series of championship games this one in New Orleans th century engraving widely reproduced From illustration on book Author Public domain PDold in New Orleans Chess in the United States Johannes Zukertort Wilhelm