This atomic weapon is mentioned in Tony Buttlers' ASP: Fighers & Interceptors, as being one of the armament schemes for the Northrop N-144, amongst others. Is this, in fact, referring to Genie, or something else?
The then top-secret project had various code names, such as "Bird Dog", "Ding Dong", and "High Card", but ultimately the designation MB-1 and the name Genie was allocated.