They are both in his handwriting. Let me read it to you.
3 seconds sound clip from the The Cocoanuts (1929) movie soundboard.
You can hear this line at 01:30:37.265 in the DVD version of the movie.
Quote context
[...]
- I know I have the sincere wishes of all my friends, and can only tell you how much I appreciate it.
- I think I can honestly say this is the happiest moment of my life.
- It's a little engagement present just given me by Mr. Yates.
- They are both in his handwriting. Let me read it to you.
- It shows how to get to Cocoanut Manor and the hollow tree stump, and reads, Hollow stump, jewels.
- There's a man outside who wants to see you with a black mustache.
- Well, I think you will want to see him. His name is Mr. John W. Berryman.
[...]