在經國先生書桌的正對面牆面上，懸掛一幅母親毛夫人的肖像。兩側則是趙恆惕所書「雙肩承大任」「一德纘中興」對聯，上題經國上將吾兄 雅正，下題趙恆惕 時年九十於台北。趙恆惕（1880年－1971年），字夷午、彝五，號炎午。湖南衡山人。曾任湖南省省長等黨政要職。在台灣先後受聘為總統府國策顧問、資政之職。以翰墨自娛，擅長行書、隸書諸體。
Chao Heng-ti (1880–1971), from Hunan Province, took up important party and government positions, including Governor of Hunan. In Taiwan, he served as National Policy Advisor and later as Senior Advisor to the President. He was skilled at various scripts, including semi-cursive and clerical.
