How do you get other master balls that come from professor elm in Pokemon gold?

You cannot get any Master Balls from Professor Elm in Pokemon Gold.

While Professor Elm does give you items in the game, he does not give any Master Balls.

There are only a few ways to obtain Master Balls in Pokemon Gold:

* You can find one in the Ilex Forest. It is located in a tree next to the entrance to the Ilex Forest Gym, where the Slowking is.

* You can win one at the Goldenrod Game Corner. You can win a Master Ball by playing the slot machines in the Game Corner.

* You can get one by trading. This is the most common way to get a Master Ball if you are playing without the use of cheat codes.

Let me know if you have any other questions about Pokemon Gold!