Jeann's Ledger is a quest item given to you during the task Coldain Shawl 3.0 #4: Making Friends, Influencing People, during the first step.
You say, 'Hail, Jeann Acur'
Your task 'Making Friends, Influencing People' has been updated.
Jeann Acur says 'Kerst is right to be concerned, but we are not out of this fight yet. I have a strategy to deal with the Northwind Trade Company, but it will require meticulous planning. The first stage is getting more members. I've started a number of initatives to make contacts and expose our name, but I think you may be key in this. I need some of your best work to give as gifts of goodwill to fellow merchants. You may have a copy of my ledger. And here is what I need.'
As far as I know the ledger doesn't have any use after that.