A page description language is a file format (and almost a programming language) for describing the contents of a printed page in a higher level than the actual output bitmap.
... St. Ives[?]
Cumbria
Abbot Hall Art Gallery[?], Kendal[?]
Beatrix Potter Gallery[?], Hawkshead[?]
Cumberland Pencil Museum[?], Keswick
Dock Museum[?], ...