The crossword solutions for the term 'HOW THE OTHER HALF LIVES AUTHOR JACOB' is RIIS, which stands for Jacob Riis. Jacob Riis was a Danish-American social reformer, journalist, and photographer who documented the squalid living conditions of New York City's poor in the late 19th century. His most famous work, How the Other Half Lives, was published in 1890 and exposed the harsh realities of poverty in the city.