Black and white photograph of the ruins at the Cumae Acropolis.

Black and white photograph of the Cumae grotto and Acropolis.

Black and white photograph of the Arco Felice near Pozzuoli. A man in a horse-drawn cart is visible in the foreground with the Arco Filice arch in the background.

Black and white photograph of Lake Averno with a hill in the background.

Black and white photograph of the Serapeum ruins in Italy. A circle of columns in a lake is visible in the center of the frame with buildings visible in the background.

Black and white photograph of the railway station at the Villa of the Mysteries in Pompeii. The building is behind railroad tracks with hills in the background.

Black and white photograph of Robert H. Merrill sitting in the ruins of baths in the extinct city of Stabiae.

Black and white photograph of Robert H. Merrill sitting in the ruins of baths in the extinct city of Stabiae.

Black and white photograph of the frigidarium of the women's baths in the extinct city of Stabiae.

Black and white photograph looking east on via dell'Abbondanza. The image shows the statue of Marcus Holconius Rufus. Robert H. Merrill is visible standing on the right side of the frame.

Black and white photograph of Robert H. Merrill standing between a stone wall and columns in the Triangular Forum at Pompeii.

Black and white photograph of Robert H. Merrill standing in the House of Pansa between two walls with columns in the background. A sign on the right side of the frame reads "DOMVS CN ALLEI NIGIDI MAI."

Black and white photograph of the brick wall of the central baths at Pompeii.

Black and white photograph of partially buried skeletons in Pompeii, Italy.

Black and white photograph stone table legs carved with lion motifs in Pompeii, Italy.

Black and white photograph looking south from a tower over Via di Mercurio, Pompeii, Italy.

Black and white photograph of Seiano, Italy, taken from the north.

Black and white photograph of Seiano and the coast from Vico.

Black and white photograph of two men and two women sitting on the rock formation Norman's Woe looking out to sea in Glouchester, Massachusetts.

Black and white photograph of three women and two men, including Robert H. Merrill, standing behind a gravestone that reads "In Memory of Nathaniel Merrill Died 1655." The gravestone in the foreground of the image reads "In Memory of Stephen Swett B.…

Black and white photograph of two women, May and Flora, sitting on a short stone wall with trees in the background at Brooklyn Botanical Gardens.

Black and white photograph of one man and two women on a hill with Washington D.C. in the background.

Black and white photograph of Algonquin Beach, taken from 1 mile south in Keppel, Ontario.

Black and white photograph (slightly overexposed) of three people walking on a dock along a river at Witches' Gulch, Wisconsin Dells. A tour boat is moored at the dock in the bottom left of the frame, and two people are visible in the boat.