This new GP 2013 feature will warm some hearts: Feature of the Day: Journal Entry History Inquiry
Feature of the Day: Journal Entry History Inquiry – Inside Microsoft Dynamics GP – Site Home – MSDN Blogs
General Ledger & FinancialsTips & Hidden FeaturesMicrosoft & the GP EcosystemGP 2013
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.