With EARTHTWERKS & Other Celestial Familiars, the collective of visual artists acts as curators, representing visual art trends across the United States and coming together under the conceptual rubric of the notion of heliograph. (gallerysidecar.com)
Babbage is also credited with inventing the cowcatcher, dynamometer, standard railroad gauge and heliograph ophthalmoscope as well as uniform postal rates, occulting lights for lighthouses and Greenwich time signals. (scientificamerican.com)
It is a limited edition heliograph of a Henry Matisse line drawing, one of 36, which I found in Amsterdam recently. (avenuelifestyle.com)