2, 1934, at a ceremony where former governor Al Smith was given the honorary title of "night superintendent". By April 1936, the renovated zoo had seen six million visitors since its reopening. To prevent the recurrence of rat infestations, Moses also instituted a rat-elimination program in and around the zoo. In June 1960, U.S. Senator Herbert Lehman and his wife Edith donated $500,000 toward the construction of a new children's zoo just north of the existing zoo. Work began that November, and the children's zoo was officially opened on June 27, 1961. The children's zoo featured attractions like a petting area with ducks, rabbits, and chickens; a large fiberglass whale statue dubbed "Whaley" (which acted as the entrance to the small zoo); a Noah's Ark feature; and a medieval castle feature. The animals were housed in small storybook-style structures bordering an irregular pond. Decline By 1967, the wooden railings around the main zoo's enclosures were rotting, and NYC Parks commissioner August Heckscher II had authorized repairs to these railings. The same year, the zoo cafeteria was renovated after a new concessionaire took control of the cafe. In the late 1960s and early 1970s, the New York City Subway's 63rd Street lines, the present-day , were being built directly underneath the zoo. A graffiti wall was erected along the line's length through Central Park. The tunnel provided a subterranean gathering place for very early subway artists who hung around together in Central Park, and was named Zoo York by ALI, founder of the SOUL ARTISTS graffiti crew. The name came about because it was in a zoo in New York, hence "Zoo York". The construction of the subway line itself was controversial because it called for of cut-and-cover tunneling, which required digging an open trench through Central Park and then covering it over. One of the concerns was that the Central Park Zoo, and a bird sanctuary outside the zoo, were located very close to the boundary of the trench. Eventually, the New York City Transit Authority, which operated the New York City Subway, agreed to reduce disruption by halving the length of the cut. A nature kiosk at Central Park Zoo was added in 1972, and a $500,000 renovation for the Lion House was proposed the following year. By then, the Central Park Zoo was quite dilapidated: in November 1974, protesters gathered outside the zoo to protest the conditions there.