Early churches in Syria : Fourth to seventh centuries - Butler, Howard Crosby, 1872-1922 (Adolf M. Hakkert, 1969)
Reprint of 1929 edition.
"The material ... taken, in large part, from the Publications of the American Archaeological Expedition to Syria in 1899-1900, and from the Publications of the Princeton University Expeditions to Syria in 1904, 1905, and 1909."