Cyanotype
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The cyanotype is a slow-reacting, photographic printing formulation sensitive to a limited near-ultraviolet and blue light spectrum, the range of 300 nm to 400 nm, known as UVA radiation. It produces
A cyanotype of algae by 19th century botanist Anna Atkins
Sir John Herschel (1842) Experimental cyanotype of an unidentified engraving of a lady with a harp, Museum of the History of Science
Architectural drawing blueprint, Canada, 1936
Cyanotype postcard, Racine, Wis., c. 1910
Photogram
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A photogram is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light.
A photogram of a number of photography-related objects
Photogram with soil and plants
One of Anna Atkins's cyanotype photograms of Festuca grasses
Photogram of a feather by Van Dyke brown print copying technique.