Regina M. Anderson, married name Regina M. Andrews, pseudonym Ursala (Ursula) Trelling, (born May 21, 1901, Chicago, Illinois, U.S.—died February 5, 1993, Ossining, New York), American librarian, playwright, and patron of the arts whose New York City home was a salon for Harlem Renaissance writers and artists. Anderson attended several colleges, including Wilberforce University in Ohio and the University of Chicago. She received a Master of Library Science degree from Columbia University and worked as a librarian in the New York Public Library System, for which she produced lecture and drama series and arts exhibitions, from the early 1920s to