. . "Berg Collection." . . "John Masefield's Salt-water ballads an exhibition from the Berg Collection on the fiftieth anniversary of its publication"@en . . "John Masefield's Salt-water ballads; an exhibition from the Berg Collection on the fiftieth anniversary of its publication" . . . . . . . . "John Masefield's Salt-water ballads : an exhibition from the Berg Collection of the fiftieth anniversary of its publication" . . .