Charles R. Smith- wonderful poet, list of his books. One of my favorites! Book List
The grade levels you see here are only a general recommendation. I've seen middle schoolers get excited about Brown Sugar Babies and first graders enjoy Rimshots. This is only a guide of where to begin.
Might be a good resource to follow: The Cooperative Children's Book Center (CCBC)
is a unique and vital gathering place for books, ideas, and expertise in the field of children's and young adult literature. The CCBC is a noncirculating examination, study, and research library for Wisconsin school and public librarians, teachers, early childhood care providers, university students, and others interested in children's and young adult literature. The CCBC is part of the University of Wisconsin-Madison (UW) School of Education (SoE), and receives additional support from the Wisconsin Department of Public Instruction (DPI).
Group items tagged 
The grade levels you see here are only a general recommendation. I've seen middle schoolers get excited about Brown Sugar Babies and first graders enjoy Rimshots. This is only a guide of where to begin.