These boxes were sent to the managers of local theatres decades (in one case even around a century) ago! In them were slides promoting upcoming films which were projected onscreen during the intermission.
From the 1910s big cinema chains began appearing in New Zealand and they competed for the rights to show overseas releases. At a time when a town Foxton's size had two cinemas this differentiation was important for business.
Some of these boxes bear the names of Aotearoa's big cinema names like 'Kerridge'. The 'Pacer-Kerridge' alliance was founded in 1987 making the upper left box the newest of the assortment seen here. By contrast, the Paramount logo seen here was phased out in 1967!