Frank Bruni (14 de diciembre de 2005). «Where the Lore Is Part of the Lure». New York Times(en inglés estadounidense). Consultado el 26 de noviembre de 2012. «Look to the ceilings of various dining rooms, which are spread over two floors of three connected townhouses, and behold row upon row of clay pipes. There are more than 50,000 of them, the property of Keens customers who, in tobacco-friendlier times, stowed and used them in the restaurant.»
Bill Schulz. «A Pipe Dream Comes to Life». New York Times(en inglés estadounidense). Consultado el 26 de noviembre de 2012. «Starting in 1885, when Albert Keen opened his restaurant and saloon, now known as Keens Steakhouse, the destination has provided post-dinner pipes to the likes of Babe Ruth, Theodore Roosevelt and Buffalo Bill Cody. Keen, who managed the acting and literary society called the Lamb's Club, on West 36th Street, in what was then the theater district, opened up his self-named restaurant next door.»
zagat.com
«Keens Steakhouse»(en inglés estadounidense). Consultado el 25 de septiembre de 2014.
