The New York Public Library’s landmarked Fifth Avenue building was designed by architects Carrère and Hastings in 1897 and completed in 1911. In celebration of the iconic building’s 100th anniversary, it was given a facelift with D/2, washing away years of dirt and grime.
The Jefferson Market Branch of the New York Public Library was designed by Frederick Clark Withers and Calvert Vaux and completed in 1877. Margot Gayle, EE Cummings and Lewis Mumford lead the effort to save it in the 1960s. Giorgio Cavaglieri was then hired by the NYPL to convert from a courthouse to one of its most unique branches. Mae West was tried for obscenity and Harry K. Thaw was convicted of the murder of Stanford White at the courthouse. More recently, Joan Berkowitz specified D/2 for exterior stone and masonry cleaning in 2010.