In picking this up on behalf of the British government’s General Post Office (GPO) film unit, and later clearing the way for Norman McLaren at the Canadian government’s National Film Board of Canada (NFB), dour documentary dominie John Grierson reveals himself to be a frivolous softy at heart. Thank heaven! These maracas are so delightful, and the toe-tapping Cuban sounds seem a perfect complement for the running-over movement and colour of the film. I love the GPO/post office stuff; it plays like the Ranimax pills in M. Lange’s (Jean Renoir, 1935) charmingly ridiculous Western stories. It sticks out like a sore thumb, it’s propaganda so blatant and innocuous as to be guileless, and unresentable.
Here: http://www.screenonline.org.uk/film/id/442234/index.html