Reply to L.M. Brown et al. “Brief history of the Cambridge STEM aberration correction project and its progeny” in Ultramicroscopy 157, 88 (2015)

We comment on a Short Communication recently published in Ultramicroscopy in which Brown et al. criticize our description of the time sequence of events in the development of aberration correction systems in electron optics during the 1990s put forward in the introduction to the Ultramicroscopy April 2015 Special Issue. We present an analysis of the published literature furnishing evidence that our description is correct.