Four unidentified students sit on a grassy area with notebooks. They are likely classmates of Jerry Jiro Yasutome at the Northwest School of Photography. Handwritten note on back indicates this was taken by a student in the PM Advanced Portraits class at the Northwest School of Photography.

Photograph of students as they photograph a female model posing in front of an automobile. Part of a class at the Northwest School of Photography. Handwritten note on back indicates this was taken by a student in the PM Advanced Portrait class at the Northwest School of Photography.

Photograph of Jerry Jiro Yasutome (center) and others processing photographs in a laboratory at the Northwest School of Photography. Taken by an unidentified student at the Northwest School of Photography.

Photograph of an unidentified man pouring liquid into a container in a photography laboratory. Taken by an unidentified student at the Northwest School of Photography.

Photograph of students as they prepare to photograph a female model on a park bench as part of a class at the Northwest School of Photography. Handwritten note on back indicates that Jerry Jiro Yasutome, father of James M. Yasutome, is pictured third from right. The name "Lyons" is handwritten on the back, along with a note indicating this was taken in the PM Advanced Portrait class at the Northwest School of Photography.

Photograph of an unidentified man pouring liquid into a container in a photography laboratory. Taken by an unidentified student at the Northwest School of Photography.

Photograph of an unidentified man in a photography laboratory. Taken by an unidentified student at the Northwest School of Photography.

Photograph of an unidentified man holding a bottle in a photography laboratory. He is kneeling in front of a shelf of bottles, some of them from Kodak. Taken by an unidentified student at the Northwest School of Photography.

Photograph of the Steel Bridge over the flooded water of the Willamette River in Portland, Oregon during the Vanport Flood. The high water has reached the bottom of the bridge. Handwritten note on back indicates this was taken May 30, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of a flooded area of the Willamette River in an industrial area of Portland, Oregon during the Vanport Flood. Taken from the east side of the river. There are several ships docked in the Willamette. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of a flooded area of the Willamette River during the Vanport Flood. In the foreground, a train is surrounded by water as the railroad is flooded. Taken from the east side of the river. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of long lines of railroad cars in the flood water of the Vanport Flood. The railroads are underwater. Taken from the east side of the Willamette River, with the west hills of Portland, Oregon visible in the background. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of the Burnside Bridge over the flooded water of the Willamette River in Portland, Oregon during the Vanport Flood. Handwritten note on back indicates this was taken May 30, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of flooded NW Front Street in Portland, Oregon during the Vanport Flood. Taken from the Steel Bridge, Union Station and the Broadway Bridge are both visible in the background. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of a steam locomotive in flood water just outside Union Station in Portland, Oregon during the Vanport Flood. Widespread flooding is visible in the area around Union Station. A long line of sandbags is visible on the left. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of widespread flooding on the Willamette River during the Vanport Flood. Taken from the east side of the river, several ships can be seen floating in the high water. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of the Hawthorne Bridge over the flooded water of the Willamette River in Portland, Oregon during the Vanport Flood. Handwritten note on back indicates this was taken May 30, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of the Hawthorne Bridge over the flooded water of the Willamette River in Portland, Oregon during the Vanport Flood. The draw bridge is up and a boat passes underneath. Handwritten note on back indicates this was taken May 30, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of a train crossing the Steel Bridge over the flooded water of the Willamette River in Portland, Oregon during the Vanport Flood. The high water touches the bottom of the bridge. Handwritten note on back indicates this was taken May 30, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of a swing bridge, possibly the Morrison Bridge, turned on its axis above the high water of the Willamette River in Portland, Oregon during the Vanport Flood. Handwritten note on back indicates this was taken May 30, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of widespread flooding on the Willamette River during the Vanport Flood. Taken from the east side of the river, there is a submerged railroad in the foreground. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of widespread flooding on the Willamette River during the Vanport Flood. Taken from the east side of the river, a large industrial building is surrounded by water. Taken by an unidentified student at the Northwest School of Photography.

Photograph of widespread flooding on the Willamette River during the Vanport Flood. Taken from the east side of the river, several ships can be seen floating in the river. Handwritten note on back indicates this was taken May 31, 1948. Taken by an unidentified student at the Northwest School of Photography.

Photograph of widespread flooding of the Willamette River at Oaks Amusement Park in Portland, Oregon during the Vanport Flood. Taken by an unidentified student at the Northwest School of Photography.

A female model leans against a tree trunk near an automobile. She is posing for photography students. There are trees in the background. Handwritten note on back indicates the initials "JY", likely Jerry Jiro Yasutome, and that this was taken in his PM Advanced Portrait class at the Northwest School of Photography.

A female model poses next to an automobile. She is posing for photography students. The automobile is parked in a grassy area and there are trees in the background. Handwritten note on back indicates the initials "JY", likely Jerry Jiro Yasutome, and that this was taken in his PM Advanced Portrait class at the Northwest School of Photography.

Photograph of construction workers at a work site. Two trucks labeled, "Ross Island Premix Concrete," are on-site, and one pours concrete. Handwritten note on back indicates this was taken September 23, 1947. Note also indicates the initials "JY", likely Jerry Jiro Yasutome, and that this was taken in one of his PM classes at the Northwest School of Photography.

Photograph of people spreading dirt on top of sandbags on the west bank of the Willamette River in Portland, Oregon to control flooding during the Vanport Flood. Union Station and the Steel Bridge are visible in the background. Handwritten note on back reads, "Jerry," indicating this was likely taken by Jerry Jiro Yasutome when he was a student at the Northwest School of Photography.