How did the crew find out about the treasure hunt (treasure island)?

The crew found out about the treasure hunt in "Treasure Island" when Jim Hawkins discovers a treasure map among the belongings of the deceased pirate, Captain Flint. Jim shows the map to Dr. Livesey and Squire Trelawney, who recognize its significance and decide to seek the treasure. They organize an expedition and recruit a crew, including the enigmatic Long John Silver, under the guise of a merchant voyage. The adventure unfolds as they set sail for the mysterious island.