This paper explores the historic ideas and practice of outdoor education, as developed in Jean Jacques Rousseau's "Émile", and realized by Adolf Reichwein's rural teaching practice. We aimed at developing a comprehensive research design, triangulating different qualitative data (text and photos). In the paper, we explore how the idea of place-based outdoor education unfolded in Rousseaús "Émile", and how Adolf Reichwein, in rural Tiefensee, enacted the practice of place-based outdoor education. We also investigate how to correlate different types of qualitative data (conceptual text and documentary photos). We show that it is possible to develop a research language, revealing how a philosophy of education can be enacted as educational practice, and our analysis demonstrates that Rousseaús and Reichwein's works functioned as precursors for outdoor education and educational concepts, that activate the cognitive, affective, and motoric domains.