Mind mapping has long been used to aid in many types of information organization, from the writing process to project management. It allows for graphical representation of the relationships and patterns that exist in large, complex sets of data. Archivists at the University of Dayton identified the mind map structure as a tool for helping to gain physical and intellectual control over a topically complex, multi-format collection. The features of a mind map could assist in dissecting relationships between materials and reveal new insights, connections, hierarchies and sibling relationships. The flexible structure was conducive to visualizing deviating sets of information and accommodating fluctuating arrangement as materials were discovered during processing. This session will explore how archivists used the mind mapping software, Personal Brain, to facilitate collaborative processing of the Auguste Martin collection and demonstrate the application of mind mapping concepts in archival arrangement. Session presented by Amy Rohmiller and Jillian Slater at the 2012 Society of Ohio Archivists Annual Conference.