Compare rock-by-rock the left side of Cook's 1906 "summit" photo to the corresponding parts of the 1957 photo by Adams Carter and Bradford Washburn. Photos juxtaposed in Bryce, R. (1999). DIO. 9 (3). p. 116. Compare also the background features in Cook's "summit" photo versus those in his own photo taken a few minutes later (towards the same direction) from the top of Fake Peak: Bryce, R. (1997). DIO. 7 (2). figure 4 versus figure 18; detailed-blowup comparisons in figures 6 and 8.
Washburn, Bradford; Peter Cherici (2001). The Dishonorable Dr. Cook: Debunking the Notorious Mount McKinley Hoax. Seattle: Mountaineers Books. OCLC47054650.