In the blog post linked above, Larry Ferlazzo describes two lessons for ELLs using the poetry of Langston Hughes:
The Library of Congress also has some excellent materials for teaching the poetry of Langston Hughes:
Portrait of Langston Hughes, 1943
https://www.loc.gov/item/2017858893/
3 - 5 6 - 8 9 - 12 English/Language Arts Bilingual Education/ESL Langston Hughes Harlem Renaissance poetry
For more primary & secondary sources, plus teaching resources, check out this Langston Hughes curated resource set.