What Happened To The Composition Holden Wrote For Stradlater?

What Happened To The Composition Holden Wrote For Stradlater? Holden tore up the composition and threw it away because Stradlater was being ungrateful. He complained that it was written about a baseball glove instead of a room or a house. Holden was upset with Stradlater because he wouldn’t tell him about his date with Jane.