After leaving the Nipigon River, Ridgway headed west once again. He visited Shoshone Falls on the Snake River, probably because he had seen photos taken there by the Harriman Expedition on their way from New York to Alaska the year before. He also stopped at the recently created Yellowstone National Park, photographing both wonders and "wild" life. Finally, this trip ended at the Columbia and Willamette Rivers in Oregon where he undoubtedly did some fishing. He incorrectly referred to the Willamette as the Willamasse in #553 and mislabeled #552 as the Cascades of the Columbia when it is obviosly another view of the Falls of the Willamette. He did, however, visit the Cascades of the Columbia. They are pictured in #'s 658, 659, and 601. Photos 658 and 659 plainly show the canal and lock, completed only 4 years earlier in 1896, and the town of Cascade Locks, Oregon. Also, photo #521 entitled "Fish Wheel, Columbia River" is on the Washington side of the Columbia, directly across the river from Cascade Locks, as can be seen by comparing the shape of the mountain ridge in the background of #521 and #597.
Elaine Miller from WSHS sent me the link to your site. Very interesting photographs of Cascade Rapids. So glad you are protecting them and getting the images out there. I've seen only one other, a Watkins that actually show people fishing at that site.
I am working with WSHS to produce an exhibit on the historical photography of the Columbia. Have you others that show the river. I am looking in particularly for those photographs that are purely landscape.