This report examines a variety of ways that the QUILL program for teaching writing was realized in elementary classrooms. In particular, the report looks at the different ways purposeful writing was achieved using MAILBAG, the electronic mail component of QUILL. The analysis shows that innovations in education should be viewed as objects created by classroom teachers as they integrate the packaged innovation with the realities of their institutions, their students, and their own goals and teaching styles. (Author)