This document summarizes the development of Coursera courses at Johns Hopkins University from 2012-2014. It notes key events including the initial announcement of a partnership with Coursera in July 2012, the first courses being run by Brian Caffo and Roger Peng starting in September 2012, and Jeff Leek running his "Data Analysis" course starting in January 2013. It discusses scaling of enrollment, approaches to building out a data science specialization, and financial details. The document reflects on reasons for their early success in MOOCs including speed, leveraging existing infrastructure, and attracting an orthogonal student population.