New Tokyo International Airport Plan
<a href="https://en.wikipedia.org/wiki/ja:%E9%81%8B%E8%BC%B8%E7%9C%81" class="extiw" title="w:ja:運輸省">運輸省</a> <a href="https://en.wikipedia.org/wiki/en:Ministry_of_Transport_(Japan)" class="extiw" title="w:en:Ministry of Transport (Japan)">Ministry_of_Transport_(Japan)</a>
<a href="https://en.wikipedia.org/wiki/en:Sh%C5%8Dwa_(1926%E2%80%931989)#Conversion_table" class="extiw" title="w:en:Shōwa (1926–1989)">Shōwa</a> 39 (1964)
1964 Transport White Paper