Dorit Fromm and Peter Bosselmann were part of the core group of students from UC Berkeley who joined Christopher Alexander in building the Mexicali Experimental Project in 1975-76. They were also the first to write and reflect on the project in key texts like Das Mexicali Experiment (Baumeister, 1978) and Seven Years Later: Mexicali Revisited (Places Journal, 1984). In their presentation —The Mexicali Experiment in its 1975 Context— they shared their experience working on the project and reflect on the insights of revisiting.