Photograph of the SP&S Railroad Band marching in the Rose Festival parade in Portland, Oregon. Large crowds watch the parade. Handwriting on the back of the print reads, "SPS Ry Band of Vancouver, Wash. Rose Festival, Portland, Or."

Photographic postcard showing girls in white dresses marching in the Rose Festival parade in Portland, Oregon. Each holds onto a streamer attached to a pole in the middle of the group. Writing on the bottom of the print reads, "Rose Festival, Portland, Ore. Electric Studio."

Photograph of the Rose Festival Court at the Rose Festival in Portland, Oregon. The Rose Festival queen sits outdoors on a throne while the princesses and other members of the court stand on either side of her. The princesses wear matching dresses. The ground around them is covered in rose petals. Stamp on the back of the print for Arthur M. Prentiss, Commercial Photographer.

Photograph of men and women posing at the Rose Festival in Portland, Oregon. Two posts behind them read "R" "R". A young woman wearing a tiara, possibly the Rose Festival queen, is flanked by young women wearing matching dresses, possibly the Rose Festival princesses. Stamp on the back of the print for Arthur M. Prentiss, Commercial Photographer.

Photograph of children in traditional dress on a Chinese-themed float at the Rose Festival in Portland, Oregon. The float has a sign with language in both English and Chinese. The English reads, "Great Gathering on the Veranda." On the left is a second float representing Yugoslavia, with people in traditional dress. Stamp on the back for Arthur M. Prentiss, Commercial Photographer.

Photograph of people performing a traditional Chinese Dragon Dance. They perform in a crowded stadium. Stamp on the back for Arthur M. Prentiss, Commercial Photographer.

Photograph of children in traditional dress on a Chinese-themed float in the Rose Festival parade in Portland, Oregon. The float displays 2 Chinese flags. Stamp on the back for Arthur M. Prentiss, Commercial Photographer.

Photograph of people sitting in an automobile decorated with flowers for the Rose Festival in Portland, Oregon. The automobile is in front of a house. Flowers on the hood spell out "Portland Ad (?) Club." The photograph has been colored. Handwriting on the back reads "Prentiss" indicating this was likely taken by Arthur Prentiss.

Photograph of people sitting in an automobile decorated with flowers at the Rose Festival parade in Portland, Oregon. Handwriting on the back of the print reads, "Rose Festival, 1912." Stamp on the bottom of the print reads, "Gifford, Portland, Oregon."

Photograph of a long counter at the Consolidated Ticket Office of the SP&S Railroad. Two men behind the counter help customers. There are several other men in the lobby. Writing at the bottom of the print reads, "Acme Photo 37002." Handwriting on the back of the print reads, "Consolidated Ticket Office. Opening April 2, 1928." Stamp on the back for Acme Commercial Photographers.

Photograph of a long counter at the Consolidated Ticket Office of the SP&S Railroad. The lobby is empty and there are several flower bouquets displayed throughout the room. Handwriting on the back of the print reads, "Consolidated Ticket Office. Opening April 2, 1928." Stamp on the back of the print for Arthur M. Prentiss, Commercial Photographer.

Photograph of downtown Portland and several buildings on the waterfront on the Willamette River. There are signs for U.S. Mills Dock, the Stephenson Co., Chas H. Lilly Co, the Portland Seed Company, and Polson Implement Co. Handwriting on the back of the print reads, "Poulson (sic) Implement Co at corner of Taylor / front to water." Stamp on the back for the Angelus Studio. The top of the photograph is torn.

Photograph of the Imperial Hotel building in downtown Portland decorated with American flags and bunting. The Owl Drug Company is located on the ground floor. American flags hang over the street where there are several pedestrians. Handwriting on the back of the print reads, "White building on L. Imperial Hotel. SW Broadway and Washington, NE corner."

Photograph of a man on the roof of a building in downtown Portland. He is painting the letter "H" on a sign for Holmes Business College. Other buildings in downtown Portland are visible in the background. Handwriting on the back of the print reads, "Holmes Bus. Coll."

Aerial photograph of the Bonneville Dam on the Columbia River in the Columbia River Gorge. Looking east, up the river. Stamp on the back of the print reads, "Taken by the U.S. Department of the Interior, Bonneville Power Administration, Portland, Oregon. Please credit." Second stamp reads, "H.W.S. Apr 1, 1948." Third stamp reads, "Beaver Engraving Co." of Portland, Oregon.

View of the Bonneville Dam on the Columbia River in the Columbia River Gorge. Taken from the shore of the Columbia River and looking east at water rushing out of the dam's spillways, also known as floodgates. Handwriting on the print reads, "Bonneville Dam - Columbia River Highway. D-107 Cross & Dimmitt." Stamp on the back of the print for Angelus Commercial Studios.

Aerial photograph and survey of Bradford Island and the construction of the Bonneville Dam on the Columbia River. Written labels on the print indicate the locations of the fish hatchery, ship locks, power house, and more. Writing on the top right of the print reads, "Aerial view from 5,000 ft. elev. Bonneville Power and Navigation Project. Cost 32,200,000. Construction period - Nov. 1933 - Dec. 1937." Other writings on the print indicate this was taken on March 27, 1935 by Brubaker Aerial Surveys. Stamp on the back of the print requests that Brubaker be given credit for the photograph.

Photograph of a model of the Bonneville Dam. The model was built by U.S. Engineers, and labels mark the main dam, spillway, fish elevators, power house, and more. A railroad in the foreground of the model is labeled "Spokane, Portland & Seattle Ry." Additional writing on the print indicates the quantities and costs involved in building the dam. Copyright on bottom of print for Photo-Art Commercial Studios in Portland.

Photograph of a portion of the Bonneville Dam under construction. The mountains of the Columbia River Gorge are visible in the background.

Photograph of a portion of the Bonneville Dam under construction. Construction workers work on the dam.

Photograph of a construction area located between the spillway of the Bonneville Dam and several railroad tracks. The Columbia River flows around the construction site and through the open spillways of the dam. There are 2 stamps on the back of the print. One is for Photo-Art Commercial Studios and the other for West Coast Engraving Co.

Photograph of a portion of the Bonneville Dam under construction. Two construction workers stand on construction materials that are suspended in the air, moving from one location to another.

Photograph taken from the shore of the Washington side of the Columbia River near Skamania, looking across the river at Oregon. Horsetail Falls is visible to the left. The waters of the river are calm and there is a boat near shore in the foreground. Handwriting on the back of the print reads, "A placid vista of the majestic Columbia with Horse Tail Falls in the middle distance." Typed label on the back of the print reads, "Looking across Columbia River from Butler, showing Horse Tail Falls -- Via S.P.&S. Plate No. 4152." Embossment on the front of the print indicates a 1909 copyright by the Kiser Photo Co. for SP&S Railway.

Photograph of the view looking west from Crown Point on the Oregon side of the Columbia River Gorge. There are several islands in the Columbia River and the Columbia River Highway is visible alongside the river. The top of Rooster Rock is visible on the lower right. The location of the Steigerwald Dairy is outlined in pencil in the distance. Today this area is known as the Steigerwald Lake National Wildlife Refuge. Writing on the front of the print reads, "Looking west from Crown Point Columbia River Highway Oregon. #D28. Copyright Cross & Dimmitt." Handwriting on the back of the print reads, "The Steigerwald Dairy from Crown Point. Outlined in pencil." Second handwritten note on the back reads, "Washougal." Stamp on the back for Cross & Dimmitt, Scenic Photographers.

Photograph of a group of people posing behind an automobile parked on the side of the Historic Columbia River Highway at Shepperd's Dell in the Columbia River Gorge. There is a waterfall behind them, to the left. Writing on the bottom of the print indicates a 1916 copyright by the Weister Co.

Photograph of several automobiles crossing the bridge at Shepperd's Dell on the Historic Columbia River Highway in the Columbia River Gorge. Two people stand on either side of the bridge, looking over the railing. The people in the automobiles look toward the camera. Writing on the bottom of the print indicates a 1915 copyright by the Weister Co.

Photograph showing a view looking east up the Columbia River Gorge. Rooster Rock is in the foreground and the Rooster Rock Cannery is visible through the trees on the lower right. Taken from a nearby hillside. Stamp on the back for Kiser's Studio. Typed note on the back of the print reads, "Lower Columbia River near Westport, Ore. SP&S Ry." [This note is incorrect. This image portrays the Columbia River Gorge, not Westport, Oregon.]

Photograph of water rushing out of the spillways of the Bonneville Dam in the Columbia River Gorge. Taken from the Washington side of the dam. A person leans over a railing on the lower right, watching the scene. A cloud of mist rises from the water. Stamp on the back of the print reads, "Restricted Photograph: Do not reproduce without written license agreement, Photo-Art Commercial Studios."