Changes in written communication proved to have significant impact on the libraries' work organization and the process of collection management. The article presents the changes in the library information framework resulting from the introduction of new communication media. Polish socio-economic transition brought the need for weeding the library's collection and was the driving force behind the application of new information technologies to fill the gaps in appropriate economic resources. A quick response to those arising needs led to a development of several proprietary databases by library staff. These databases, constantly updated and expanded, are still a valuable source of information. This paper concentrates on the evolution and functioning of the hybrid structure of our library, where new media sources continuously complement traditional print materials. Finally, the article discusses different levels of transformation related to the library's activities, from collection development to scientific and scholarly information services.