Fix typo in capitalization of last line of "Winter in the Country."
Add Messenger appearance of "If We Must Die."
Fix error in attribute preventing parsing.
Fix typo.
Add Clement Wood review from "[Literary Review of the] New York Evening Post."
Fix ref on quote in Braithwaite review.
Shifts whitespace in apparatus "America" to render properly with hsxslt.
Add supplementary material from Kerlin's NEGRO POETS AND THEIR POEMS.