This document outlines common documents used to prove lawful sources of funds for EB-5 investors' petitions. It lists sources such as salary earnings, loans, investment earnings, property sales, and sale of a business. For each source, it provides examples of evidence documents like W-2s, tax returns, and bank statements for salary; loan documentation and bank statements for loans; investment account documents and bank statements for investment earnings; purchase agreements and bank statements for property sales; and business registration and sale documentation for sale of a business. Other miscellaneous sources like inheritance and lawsuits are also mentioned.