This document discusses thematic research collections (TRCs) and their role in creating new forms of scholarly writing. It provides examples of early TRCs like the Rossetti Archive and Blake Archive. While these collections consolidated content thematically, they were still organized like traditional libraries and did not fully achieve "contextual mass" by connecting different parts to support scholarly analysis. The document argues TRCs need to go beyond just searching and displaying items to truly support scholarly primitives like annotating, comparing, and illustrating. Overall, it analyzes how TRCs are beginning to replace books and libraries as the "laboratory of the humanities" but still have room for more networked organization that brings together different evidence types.