<prompt> Human: My family moved to Chicago, IL 25 years ago, and my grandpa worked for years for cash, never paying income taxes. He saved up about 60,000 that he just told me is for me to use when I purchase my first house.I have no idea what to do with this now... But I am planning on buying a house next year. This money would help immensely but I want to do things legitimately.How do I legitimately receive this money and use it to help pay for a house?  <response>: He gives it to you and signs a gift letter. 