We’re taking you back to a world that seems especially foreign today – a world with no selfie sticks, no tens of billions of photographs taken every day from digital screens, a world where the photograph was a rare, special and beautiful thing.New York City plays a very interesting role in the development of photography. While the medium was not invented here, many of its earliest American practitioners were trained here. In particular, the students of Samuel Morse (better known for the telegraph) became masters of the daguerreotype portrait in the early 1840s.The first space photography was taken from the rooftop of New York University. Broadway was known across the country for its dozens of daguerreotypists and their lavishly appointed galleries.But the greatest of them all was Mathew Brady who, from his famous Broadway studio, focused on capturing the images of the world's most famous people -- from Abraham Lincoln to Barnum favorite Tom Thumb. You may know Brady from his Civil War photography, bringing a dose of realism into the parlors of sheltered New Yorkers. One particular gallery show in 1862 called The Dead of Antietam would shake the city and set the stage for the invention of photojournalism.