In 1946, in response to changes in genetics research after the war, Dr. Demerec and his staff wrote a 68-page proposal called Outline of a Proposed Program of Research for the Department of Genetics. With only two Carnegie Institution laboratories, the Main Building (Carnegie) and Animal House (McClintock Lab), there was insufficient space for the ambitious array of research projects described in the report. A new building was then proposed and in 1951, with the help of funds raised through the sale of the Eugenics Record Office buildings and land, ground was broken for the construction of a new laboratory complex.