portion of the old Chicago Stock Exchange building collapsed on him. His body went unnoticed for some four weeks, until it was uncovered by demolition workers on May 9th. He is buried in Chicago's Graceland Cemetery, not far from Louis Sullivan. The 1994 book by Richard Cahan, They All Fall Down: Richard Nickel's Struggle to Save America's Architecture, is about Nickel's lifelong effort, with friend and architect John Vinci, to preserve Chicago's architectural heritage. Richard Cahan and Michael Williams co-edited a collection of Nickel's photography, titled Richard Nickel's Chicago: Photographs of a Lost City. Works Nickel's black-and-white photos have been displayed at the Art Institute of Chicago and elsewhere. The Richard Nickel Committee and Photographic Archive, a non-profit organization was devoted to preserving the photographer's work for more than 40 years, and holds the copyrights for most of his pictures. Nickel died without completing a book that he had begun in the 1950s, of his large collection of photographs of Sullivan's work that he took. The book was finally completed and published in 2010, The Complete Architecture of Adler & Sullivan — by Richard Nickel, with Aaron Siskind, John Vinci, and Ward Miller. Richard Nickel Archive Richard Nickel's works, which include negatives, photographs, and research papers, have been donated to the Ryerson and Burnham Libraries at the Art Institute of Chicago by the Richard Nickel Committee in 2010. The Richard Nickel Archive collection is accessible to the public at the Art Institute, along with a finding aid to the collection. Also, more than 1,300 images from the Richard Nickel Committee's donated collection are available for viewing online at the Ryerson and Burnham Libraries' website pages for the Richard Nickel Archive. Numerous duplicate photographs have been donated over time to other institutions, including The Arts Club of Chicago, the Society of Architectural Historians, Landmarks Illinois, and Preservation Chicago. Photographs of the Garrick Theatre were donated by the Richard Nickel Committee to the collection of the Polish Museum of America in Chicago. Notes Further reading They All Fall Down: Richard Nickel's Struggle to Save America's Architecture — by Richard Cahan; 1994. The Complete Architecture of Adler and Sullivan — Richard Nickel and Aaron Siskind, with John Vinci and Ward Miller; The Richard Nickel Committee, Chicago, IL; 2010 Richard Nickel Dangerous Years: What He Saw and What He Wrote — by Richard Cahan and Michael Williams; 2016. External links Art Institute of Chicago,