Source: The Redesign of a Series of Concrete Material Washers by Richard Walter Leutwiler, 1911.
Dreaming Made Easy
Image source: The Beauty of the Heavens by Charles F. Blunt, 1842.
Changing Dream and Permanent Dream
Image source: The Beauty of the Heavens by Charles F. Blunt, 1842.
Where are Your Ghosts Hiding
Image source: The Beauty of the Heavens by Charles F. Blunt, 1842.