Black and white photograph of a bride and groom, Ida Merrill and Kenneth Hewitt, in front of the steps of a house.

Black and white photograph of a boy, Robert, standing in front of a wall.

Black and white photograph of the house at 317 Fulton St. Grand Rapids, Michigan.

Black and white photograph of the house at 317 Fulton St. Grand Rapids, Michigan.

Black and white photograph of a mountain gorge covered with trees with another mountain visible in the distance.

Black and white photograph of a car parked on a bridge over a river. A man and a woman are visible standing in front of the car.

Black and white photograph of a tiered rock wall near Kaaterskill Falls, New York.

Black and white photograph of Kenneth Hewitt and Ida (Merrill) Hewitt standing next to a tree in front of a forest near Hannacrois Creek, New York.

Black and white photograph of a hydroelectric power plant. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a hydroelectric power plant and dam. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of ten people, eight women and two men, in front of an open arched door. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a man walking across a street lined with lampposts and trees in front of a large building with hipped roofs, columned porch, and nine visible chimneys. Taken my Merrill while attending the American Society of Civil…

Black and white close-up photograph of a dam. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a lock. A building is next to the lock, and a flagpole and flag are visible in the center of the image. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a group of people talking in a courtyard in front of a building. Chairs are scattered around the courtyard. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a group of people walking along a park path lined with metal benches. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a group of people organizing for a group photo in front of a large building. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of the interior of a power plant with transformers. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.

Black and white photograph of a Robert H. Merrill holding a trout in front of the steps of a house.

Black and white photograph of a lake behind trees. "Half Moon Lake - Bitely Looking South" is written on the bottom of the image.

Black and white photograph of a tree-covered hill in front of a lake. Several buildings are visible on the left side of the image on the coast of the lake. "Looking South at Portage Point" is written on the bottom of the image.

Black and white photograph of a lake behind trees. A river attached to the lake is visible across from the photographer. "Sand Lakes Back of Highlands Lodge" is written on the bottom of the image.

Black and white photograph of several cottages scattered among trees in the woods. "Cottages at Little Manistee Looking N.W." is written on the bottom of the image.

Black and white photograph of a small wooden raft floating next to the shore of a lake. "Pickerel Lake - Bitely" is written on the bottom of the image.