RuneScape Classic Wiki
Advertisement
RuneScape Classic Wiki
The main RuneScape Wiki has an article on: Invoice
The Old School RuneScape Wiki also has an article on Invoice.

The Invoice is a quest item used in the Grand Tree. It must be obtained from the Shipyard foreman, and contains evidence that Glough has ordered a fleet of gnomish war ships to be built. Reading the invoice brings up the following prompt:

Transcript

This article on an item has an associated transcript page.