Book excerpt: First published in 1989. It seems such a long time ago, another age—yet it is a mere twenty-odd years since the original Models in Geography was published. It is an even shorter time since the first tentative steps were taken towards an alternative formulation of what might constitute a geographical perspective within the social sciences. What came to be called the political-economy perspective has progressed with remarkable speed and energy to generate its own framework of conceptualization and analysis, its own questions and debates. The papers in these two volumes are witness to the richness and range of the work which has developed over this relatively short period within the political economy approach. Moreover, from being a debate within an institutionally defined ‘discipline of geography’, to introducing into that discipline ideas and discussions from the wider fields of philosophy and social science and the humanities more generally, it has now flowered into a consistent part of enquiries that span the entire realm of social studies.