Travel reports of lecturers and members of the Jan Hus Educational Foundation are embodied in six volumes. In terms of time, they cover the period from 1983 to December 1989, mainly from Prague, Brno and Bratislava. The reports include the length and main purpose of the stay, a description of the trip including possible complications in crossing borders, meetings with other people and subjects of their interviews, information on specific activities of the state police, etc. Visitors of Czechoslovakia also proposed other forms of cooperation in their reports. There are unique and very specific documents mapping the concrete forms of the Czechoslovak dissent linked with underground universities, efforts of the foreign organisation and important Western representatives of science to support the unofficial educational environment, and documents describing the contemporary social and political conditions in Czechoslovakia including the activities of the state police.