Since The New York Public Library opened its doors in 1895, its librarians have been greeted with an unending stream of questions. The people of New York City—and beyond—have a voracious appetite for knowledge and, for more than 100 years, the Library is where they have come for answers. In the 1920s, staff provided instructions on how to shear camels and directed patrons to prints illustrating 14th-century corsets. In 1956, a schoolteacher phoned to learn the signatories to the 1888 Suez Treaty. The Library’s highly trained staff has even sought an answer to what makes mud stick together.