While our frameworks for the analysis of textual information and verbal communication are rich, our means for performing the same investigations of visual information are comparatively weak. Given the increasingly visual orientation of our culture and technologies, this is problematic. This poster presents a case for the study of ad hoc visualizations as both communicative practice and information behavior. Ad hoc visualizations are images spontaneously created during conversations. Often corresponding to moments of heightened clarity or coordination, the creation of such visualizations can be viewed within a broad communicative context, alongside linguistic and other non-textual modes of exchange. Further study of image-enabled discourse, and specifically ad hoc visualizations, will contribute to the field of information science by extending existing research related to information behaviors into the realm of information creation. It will also provide a more inclusive framework for the study of visual information.