Istanbul Atatürk Cultural Center was conceived for the Koç Foundation as a project incorporating library, museum and exhibition halls on the hexagonal grid of the site plan, but only the library was built in 1973-75. The acknowledged reference for the library is Eldem's unbuilt project for the Turkish Restaurant of the Istanbul Hilton Hotel. Architect Sedad Hakki Eldem. (Taken from English summary on page 8)
Ibrahim, Abdelbaki Mohamed (ed). 1998. Atatürk Library, Istanbul. In Alam al-Bina. Cairo: Center for Planning and Architectural Studies, 50-51/200.