Short answers, pulled from the story.
The first photograph to illustrate a newspaper story appeared on the 25th of June 1848. It depicted barricades in Paris during the June Days uprising and was published as an engraving in L'Illustration of 1, the 8th of July 1848.
Roger Fenton became the first official war photographer during the Crimean War. His work documented the effects of the war on troops, panoramas of battle landscapes, model representations of action, and portraits of commanders.
The Golden Age of Photojournalism spanned roughly from the 1930s through the 1970s. This era began with the development of the compact commercial 35mm Leica camera in 1925 and flash bulbs between 1927 and 1930.
Life magazine stopped weekly publication in December 1972 because it could not compete with other media for advertising revenue. The end of this publication marked the conclusion of the Golden Age of Photojournalism.
Mike Meadows faced suspension without pay after his picture of firefighter Mike Alves cooling himself off with water was revealed to have been staged. He admitted saying it would make a nice shot even though he denied directly asking him to do that.