Results of a survey with 242 participants on connections between assumed benefits of visualizations in the library context and research behavior aspects (frequency of digital material usage, material focus, research subjects etc.). Additionally, participants were subjected to the visualization "An Ocean of Books" by Gaël Hugo and instructed to choose up to five adjectives out of the reaction cards subset proposed by Merčun[1]. The head of the file contains the question ID, the question itself, and short information on the data type. Feel free to contact me if you have any questions! [1] T. Merčun. Evaluation of information visualization techniques: analysing user experience with reaction cards. In Proceedings of the Fifth Workshop on Beyond Time and Errors: Novel Evaluation Methods for Visualization, BELIV ’14, pp. 103–109. Association for Computing Machinery, New York, NY, USA, Nov. 2014. doi: 10.1145/2669557.2669565