Photographic map of the normal solar spectrum made with the concave grating by prof. H.A. Rowland, Johns Hopkins University. 2nd series, 1888. (titre original)

The Great Equatorial Telescope of Lick Observatory (titre original)

Across the Hills and Valleys west of Mt. Hamilton [Lick Observatory] (titre original)

Lick Observatory : General View of Observatory, Peak and Buildings (titre original)