Armstrong, William A Sean O'Casey / William A.Armstrong. - London : Longmans Green for the British Council and the National Book League, 1967. - 39 p. : ill. ; 21 cm. - Bibliographical series of supplements to British book news on writer s and their work ; ., no.198 . Bibliography : p.35-39. Subjects--Personal Names: O'Casey, Sean 1880-1964 Dewey Class. No.: PS 820.6242 B53 no.198