“Theocritus Idyll XVIII, chorus and musicians.” 1913. In the public domain in the United States because it was published before January 1, 1924. via https://www.pinterest.com/pin/315533517636163966/
“Orange and Blue, The Library at Ardilea.” ca. 1911. Oil on canvas. Private collection In the public domain in the United States because the artist has been dead over 70 years. via https://www.the-athenaeum.org/art/detail.php?ID=88274
“Interior of the Mosque of Sultan Hassan, Cairo, which was completed in 1359, during the Mamluk era in Egypt. Undated. Lithograph. In the public domain because the artists have been dead over 70 years. via http://www.salongen.no/619/
Many if not most of the artist’s work were sold as lithographs. Some of his of Ancient Egypt I used in an earlier post which you might want to look at.