Complex sentence: The Ropert Opie Collection, in conjunction with the company, presented an exhibition of the company's early records and advertising material during June and July 1986 at the Pack-Age Museum at the docks.
Split into simpler sentences: The Ropert Opie Collection, in conjunction with the company, will be presenting an exhibition of the company's early records and advertising material. This will be shown during June and July at the Pack-Age Museum at the docks.