Although new technology has taken its place, the blueprint process was used primarily for copying architectural and mechanical drawings. In what year was the innovative blueprint process first introduced?

Introduced in 1842 by Sir John Herschel, blueprints revolutionized the way we copy and share architectural drawings. Now obsolete with new technology, the term "blueprint" can be informally used to describe any architectural drawing.

Asked by Rachel Bortles · Last updated 5 years ago · 7.3K views · SOURCE