I kinda' wonder if there's any Astra prints of live-action stuff out
Screen Attractions had a Chaplin short, under the name “Distress Signals”. Astra mostly seemed to focus on cartoons
Astra, Screen Attractions, Exhibitor's Pictures, Modern Film Sales, etc. etc. etc. all seem to have been M.J. Kleinerman companies. Each was simply operating at different times throughout his 40 or so year career of buying/reissuing, duping, and pirating films. Some of these companies may have had different people listed as their chief operating officers. Cinepix was probably Astra, simply using a different company name at a certain point. We may never know the full extent of what each company issued since Kleinerman's archive was vast and handled in a pretty willy-nilly way.