retiring chairman

The article mainly introduces the different charaeteristics and service objects of American President Library and Russian President Library,the sources of the incumbent president and the cultural relics’ sauing ways of the past presidents.

本文介绍美国和俄罗斯总统图书馆各自的特色、服务对象,在任总统的信息来源以及卸任总统的文物保存方式。