You need one poem for Tuesday. Not a unit, not a syllabus, one poem you can read out loud in four minutes to a room of children at wildly different reading levels. That's what this set is for. Seven books, nearly all of them anthologies, and for each one you'll find out how long it is, roughly how many poems are in it, whether there's a contents page or index you can actually search, and the names of specific poems worth turning to. Pick the one that fits the room you have and the day you're having, and read at whatever level each child is at.
Every one of these earns its place by being usable, which mostly means: can you find something good in it in under a minute, and does it survive being read cold by a tired adult at two in the afternoon. So the practical details are in each entry, page counts, poem counts, whether there's an index, named poems to turn to. They answer different questions: three are funny (the two Silversteins and the Prelutsky), and if you're filling a Friday afternoon that's your aisle. Two are serious (Greenfield, Hughes), and if you're building a unit or want a room to go quiet, go there instead. One is a subject-sorted rhyme bank for the youngest children, and one is a bridge from liking poems to following poets.