‘worked’ historical pictures (exact matches)

Great Wall of China
Great Wall of China
King Hiram
King Hiram
Hannibal's elephants
Hannibal's elephants
Einstein worked at numerous universities and polytechnics
Einstein worked at numerous universities and polytechnics
Gottlieb Daimler and his friend Wilhelm Maybach
Gottlieb Daimler and his friend Wilhelm Maybach
Richard Sorge, German Communist spy
Richard Sorge, German Communist spy
Work on the Panama Canal was brought to a halt by yellow fever
Work on the Panama Canal was brought to a halt by yellow fever
Monsieur Edouart, Silhouette Likenesses, trade card
Monsieur Edouart, Silhouette Likenesses, trade card