These archival collections encompass professional and personal documents of architects and designers active in 20th century Turkey. They include a variety of materials, ranging from sketches, drawings, correspondence, contracts, maps, and photographs to audio recordings and videos. Accompanying these extensive sources is a selection of architectural photographs by Gültekin Çizgen and Kayıhan Türköz, taken in various cities in Turkey between the 1960s and 2000s.