RTI Gallery

This gallery features artifacts photographed and displayed with Reflectance Transformation Imaging, or RTI.  This method allows users to view the artifacts under different lighting conditions, and therefore to see features that might otherwise be obscured by shadows cast during the photography process.

Note: If you see an error message below, please copy and paste chrome://settings/system into the Chrome search bar and toggle “Use hardware acceleration when available” to off.


John Wesley Powell’s Watch (GRCA Catalog No. 20836)
Featured above is the gold watch and watch key that belonged to Major John Wesley Powell. Powell led two expeditions down the Colorado River—the first, in 1869, and the second in 1871-1872.


The artifacts in this gallery are displayed using WebRTIViewer.