G. Shark Codes
If you become good friends with Mary (who runs the Library) there is a chance you may obtain the Treasure Map from her. You'll know you're getting close when she starts to say "I've read so many books now in library" when you talk to her. One day when you enter her shop she won't have any of the normal selection available (no books or computer). She'll tell you that she was cleaning and she found a map. The Treasure Map is all mixed up though and she asks you to help her straighten it back out.
Once you have completed the map Mary gives you the map. The next clue to finding the treasure is now listed in your system notebook in the Q&A section. Mary also says that if you want to play the slide puzzle game again, you can buy it from Bill's shop for 3480G. Open up your system notebook (press SELECT twice) and open the Q&A. Question #24 is now there and reads "Where is the treasure.....?".
Open the system notebook back up and check the Q&A. Now there's a Question #25 that reads "What is the Real Treasure Map?". The answer says "Superimpose the two maps and... Here's a hint: the Trade Menu". At this point you need to have a friend who also has Harvest Moon 2 and has also gotten the treasure map. Link your Gameboys together and head to the Library. Activate the Trade Center together. Select the "Combine Maps" option to combine your two map pieces together. You now will have the "real treasure map".
The treasure is the Miracle Glove, an item you use when you're harvesting crops. Usually when you harvest you have to bring your horse down to the field, pick, and then throw it into the horse's saddlebags. Sometimes the horse will take off running right after you toss it your item, which means it ends up on the ground and it destroyed. No longer do you need to use the idiotic horse! Instead just equip the Miracle Glove, pick an item, and toss it! The item doesn't get destroyed like previously, instead the item magically is transfered to the shipping bin. The Miracle Glove makes harvest day go by a lot quicker and with virtually no crop destruction.