Only these left to do but I am stumped !
56a After ages in America, English stage unknown work in verse (5,5)
?R?Y? ELEGY I guess this must be Grays Elegy but how do you get GRAYS from 'after ages in America' ?
5d One more proficient in long association with Satan (9)
27d It's concluded a statement of the obvious (5,4)
T?E?S ?H?T (not 100 per cent sure about the E)