The Wizard of Oz by Lynam Frank Baum Chapter 16 Page 4

“That is proof that he is sharp,” remarked the Lion.

“Well, I must go to Oz and get my heart,” said the Woodman. So he walked to the Throne Room and knocked at the door.

“Come in,” called Oz, and the Woodman entered and said, “I have come for my heart.”

“Very well,” answered the little man. “But I shall have to cut a hole in your breast, so I can put your heart in the right place. I hope it won't hurt you.”

“Oh, no,” answered the Woodman. “I shall not feel it at all.”

So Oz brought a pair of tinsmith's shears and cut a small, square hole in the left side of the Tin Woodman's breast.