I came across these from a Century magazine of February 1908 but without any accompanying text pages in the file so they couldn't have been very interesting -- or maybe they got lost. I don't know. I did a little research and found that these were illustrations that were also used for a book Century published in 1908, written by Robert Hitchens entitled Egypt and Its Monuments.
Hitchens and Guérin also collaborated on subsequent titles, The Holy Land, in 1910; and The Near East, in 1911.
For more examples of Guerin's work, click on his name among categories, right, and scroll down.
Jesus, Mary and Joseph with the Pyramids of Gizeh in the background