This volume presents the first English translation of Harald Ingholt's seminal work Studier over Palmyrensk Skulptur, together with a number of studies that contextualise this important volume in the light of current research. Almost a century after its publication in 1928, Ingholt's ground-breaking Danish-language monograph remains essential reading for all scholars of Palmyrene archaeology and iconography, setting out observations on the typology and style of securely dated Palmyrene portraits, and establishing a stylistic and chronological sequence that remains in use today. Included alongside the translation of Ingholt's writings are contributions by leading scholars in the field who seek to introduce Harald Ingholt and explore the impact of his work in Palmyra, as well as presenting a survey of all the portraits from Palmyra that can be securely dated by inscription. The translation and commentary have been realized as part of the Palmyra Portrait Project, directed by Prof. Rubina Raja.