The Routing Slip is a key item which appears in Paper Mario: The Thousand-Year Door.
History[]
The Routing Slip can only be obtained by taking on Mayor Dour's trouble, "Newsletter...". As stated, Mario must first get the Routing Slip from Mayor Dour in Twilight Town and then take it to the Puni Elder at The Great Tree. Mario must then take the Routing Slip to Kroop in Petalburg and finally report back to Mayor Dour for 30 coins as the reward.