Arranged alphabetically, Correspondence documents Pogrund's relationships with political activists, journalists, friends, family, and other associates. Letters between Pogrund and noted activist and dissident Robert Sobukwe comprise a particularly important part of the collection. Written predominantly while Sobukwe was imprisoned on Robben Island for organizing a mass protest in 1960, the letters concern a variety of topics, including international affairs, social and political philosophy, religion, and the day to day lives of each man. The Sobukwe correspondence also contains letters between Pogrund and other supporters of Sobukwe, such as Eulalie Stott and Peter Hjul, documenting the extensive efforts to provide Sobukwe with legal representation, food, clothing, books, and other items. Photostats of letters from Sobukwe to his wife Veronica, letters from other members of Sobukwe's family to Pogrund, and one folder of speeches are also listed under Robert Sobukwe.