Jacob August Riis (May 3, 1849 - May 26, 1914), a Danish-American muckraker journalist, photographer, and social reformer, was born in Ribe, Denmark. He is known for his dedication to using his photographic and journalistic talents to help the less fortunate in New York City, which was the subject of most of his prolific writings and photographic essays. As one of the first photographers to use flash, he is considered a pioneer in photography. Wikipedia
The definitive Wikipedia entry for Jacob Riis. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Jacob_Riis
