Fox Talbot and Paul Strand provide a grand context for the work here, they say.
In 1834 Fox Talbot put a leaf on light-sensitive paper and achieved a ghost-like image.
More progress was made by others, and in 1852 Fox Talbot patented a prototype of photo-engraving.
It was published by Fox Talbot, one of the people attributed with inventing photography.
Other accounts say he was inspired by one of Fox Talbot's assistants.
Fox Talbot's calotype was discovered earlier but did not enjoy commercial success.
Fox Talbot replied that some of her photographs of the telescope "are all that can be desired".
Both of these had been asked to assist Bridges by Fox Talbot.
Fox Talbot had developed the calotype process and patented it in 1841 to run until 1855.
Fox Talbot took pictures through a solar microscope before the invention of photography was announced.