In “A Chronology of Photography” photojournalist Paul Lowe and his contributors detail the medium’s swift progression from the purview of the scientists who invented it (noted astronomer John Herschel coined the term “photograph” in 1839, combining the Greek words for “light” and “drawing”) to its adoption by entrepreneurs who established thousands of photographic studios to meet the growing demand among members of the middle class for images of themselves, something previously available only to the wealthy. – Washington Post