Black and white lantern slide of rows of Kerzerho standing stones in alignment.

Black and white photograph of a two-story beach house surrounded by palm trees. Two people are standing across the street from the house, and one person is sitting on a raised ledge next to them. A bicycle is visible leaning against a stone wall in…

Black and white photograph of Killarney along the Georgian Bay, Ontario.

Black and white photograph of a road built into the side of a mountain range. "La Guaira-Caracas Ry." is written on the bottom of the image.

Black and white photograph of a coastal city in front of a mountain range. The photo is taken from a ship at sea, and "La Guaira from Ship." is written on the bottom of the image.

Black and white photograph of a coastal city taken from a train above the city. A mountain is seen in the distance, and a ship is visible sailing in the harbor. "La Guaira from Train." is written on the bottom of the image.

Black and white photograph of an airplane which reads "X-ABC" on its wing and "62" on its tail. The image of the globe on a bird's wing is painted on the side of the aircraft. Three men are working on the plane, standing either on top of the plane or…

Black and white photograph of an airplane on an airstrip. Behind the plane is a crowd of people. The plane has "Correo Aereo" written on its left wing and "X-ABC" written on its right wing.

Black and white photograph of a ladder with two adjustable legs over a measuring grid square on grass. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations. Flowers and trees are…

Black and white photograph of two metric measuring grid squares next to a measuring stick on a rug. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations.

Black and white photograph of two metric measuring grid squares next to a measuring stick on sand. Part of a camera ladder rig system developed by Merrill for taking overhead photographs of archaeological excavations.

Black and white lantern slide copy of a map of Lake Agassiz, large glacial lake in central North America during the last glacial period.

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

Black and white photograph of a boat launch area with many docks and boats on a lake in front of mountains.

Black and white photograph of camp at Gravel Lake [likely Lac des Gravier]. Taken by Robert Merrill from northeast. Four people can be seen standing in the background next to a log cabin.

Black and white photograph of camp at Gravel Lake [likely Lac des Gravier]. Taken by Robert Merrill from northwest. Four people can be seen in the background standing next a log cabin. A boat is visible on the shore in the foreground.

Black and white photograph of a shoreline on Lake Joseph, Ontario. A large building is visible on a hill with a boathouse on the shore.

Black and white lantern slide of Lake Nemi, near Rome, Italy.

Black and white photograph of Lake Nemi with mountains in the background.

Black and white photograph of Lake Simcoe from Allandale Station, Ontario, Canada. Two men and a stretch of railroad tracks are visible in the foreground.

Black and white photograph of Lamont artifacts including part of a skull.

Black and white photograph of Lantana house. The house is visible behind a foliage-covered fence.

Black and white photograph of boat launch at piers in Saugatuck, Michigan. The name "Imp" can be seen on the side of the boat. Five people (two men and three women) are sitting in the boat, and two people (men) are standing on it.

Black and white photograph of river, taken by Robert Merrill leaving Chicoutimi, Québec.