A brief history (and geography) of Supergravity: the first three weeks... and after
arXiv:1704.05886 · doi:10.1140/epjh/e2018-90005-3
Abstract
I summarize, at its 41st--and what would have been Bruno's 94th--birthday, the history of the discoveries of Supergravity and some of its structure and later developments.
Important post-publication update