The research phase for each project focuses on the primary archival sources, including the British Library for maps and manuscripts, the National Archives, RIBA and V&A Drawings Collection, Soane Museum, Courtauld Institute, local studies libraries, County Record Offices and private collections. Maps and historic images are used to give an accurate picture of the landscape development but also a living sense of the place. The research material is transcribed, analysed, and cross-referred between manuscript, map and illustrative material to produce a detailed, holistic account of the development of individual features and the landscape. The presentation of the finished work depends on the site and the nature of the project but normally includes an in-depth history, chronology, phases of development, significance, and a bibliography and sources, alongside map regressions and analysis drawings.