Past studies on a person's choice of information sources have shown mixed results because of a lack of understanding of the 'context' surrounding information seeking that impacts a person's choice of an information source. The Contextual Identity Framework combines three conflicting views of context to try and define its boundaries in information behavior. However, it is not clear in which of these three views of context would 'information source' fit. Would it be part of the shared context or contextual stereotype or both? Also, prior studies have often muddled the distinction between sources and channels, and between sources and source types. They have not been comprehensive in classifying types of information sources, especially with the advent of new media. To help address these gaps, this theoretical study proposes: 1) a classification of information source types; 2) a workflow of interaction among different possible elements of context; and 3) the placement of information source within the context of information seeking behavior as defined by the Contextual Identity Framework. The frameworks should help us better understand information sources in relationship to the context of information seeking behavior, and help lend greater rigor to empirical studies relating to a person's choice of information sources. It would also benefit designers of search systems paving the way for the possible information seeking systems that take the context of search into consideration.