You're asking about a collection of almost 250 poems, so I can only give you a smattering of examples of metaphors--comparisons that do not use the word "like" or "as."
Poem 3: Ollie McGee
But what think you gnaws at my husband's heart?
The husband's guilt is compared to a mouse or other small animal that gnaws at his dead heart.
Poem 4: Fletcher McGee
She was a hunk of sculptor's clay,
My secret thoughts were fingers:
They flew behind her pensive brow
And lined it deep with pain.
Fletcher McGee is saying that his wife's face was like a hunk of clay that his secret thoughts molded as if they were fingers.
Poem 5: Robert Fulton Tanner
But a man can never avenge himself
On the monstrous ogre Life.
Tanner is comparing Life's challenges to a monstrous ogre.
Poem 7: Serepta Mason
MY LIFE'S BLOSSOM might have bloomed on all sides
Save for a bitter wind which stunted my petals
Serepta compares success in life to a flower's blossom.