you can locate books in the libraries using omni and entering the title, author or subject of the book. to find a book by subject, you can enter a subject heading. be sure to select "subject" in advanced search. a sample of subject heading for books on slavery are listed below:
47 by walter mosley
chains by laurie halse anderson
elijah of buxton by christopher paul curtis
f is for freedom by roni schotter
heart and soul by kadir nelson (illustrator)
slavery by reg grant
underground to canada by barbara smucker
under the quilt of night by deborah hopkinson; james e. ransome (illustrator)