Danish-American writer, photographer, and activist (1849–1914) best known for his work in exposing and improving the squalid conditions endured by the poor in New York City. His pioneering 1891 photojournalistic volume, How the Other Half Lives, remains a touchstone in the history of both urban photography and social reform. ALS, one page, 4.5 x 7, March 29, 1913. Riis ironically writes to a friend regarding his difficult to decipher handwriting. In part: “Good luck to you, man of courage and discernment, I am constantly arraigned for my criminal handwriting. I always insist it is fine for the others who cannot read. I am glad to find a man who can and who is bold enough to arrest it. Now, really, it isn’t so bad, is it?” Light creasing and toning, and a mild mounting remnant towards the top edge, otherwise fine condition. RRAuction COA.