1) Boats 2) Hobos 3) Vagabonds 1) Rootless people 2) They sang Under the Boardwalk 
(from the article `Grierson, John`) ...University of Glasgow and the University of Chicago. He returned to England in 1928, and the next year the Empire Marketing Board Film Unit ... The British documentary film movement, led by Grierson, influenced world film production in the 1930s by such films as Grierson`s Drifters (1929), a ... ...