So, I'm looking for this purple poetry book.

It’s an anthology of poetry that’s also sort of a textbook. I can only recall that it had information about writing poetry (i.e., for a classroom setting) as well as an index of poetry by topic.

It was somewhere between 200 and 300 pages, in paperback, and it was purple.

It’s a long shot, but does anyone have any idea how I can figure out what book this was (repositories of lists of educational books, poetry buffs, websites where I can search for purple books)?

Thanks so much.