As users advance in their search within a system, different queries are conducted and various results are examined by them. These objects form an implicit individual library representing the acquired knowledge. In our research we aim to supply the user with visualizations of the search history and interaction methods to organize the history. The fundamental question is what role search history exploration can play in the users search process. In this paper we want to introduce Ideas of a prototypical system for search history exploration and discuss methods to address the questions mentioned above.