National Transportation Library

States National Agricultural Library，簡稱：NAL），位於馬里蘭州貝爾茨維爾，隸屬於美國農業部，是世界最大的農業研究圖書館之一，亦是美國5所國家圖書館之一（其他4所為國會圖書館、國家醫學圖書館、國家交通圖書館（英语：National Transportation Library）和國立教育圖書館）。

1960–1990. Research and Innovative Technology Administration National Transportation Library. Federal Highway Administration（英语：Federal Highway Administration）

Archive.  Central Transportation Planning Staff. The Transportation Plan for the Boston Region - Volume 2. National Transportation Library. 15 November 1993

ISBN 9780738535760.  Central Transportation Planning Staff. The Transportation Plan for the Boston Region - Volume 2. National Transportation Library. 15 November 1993

ISBN 9780738535760.  Central Transportation Planning Staff. The Transportation Plan for the Boston Region - Volume 2. National Transportation Library. 1993-11-15 [2012-07-03]