The Mortgagee must retain copies of any advertising device it produces that is related to FHA programs for a period of two years from the date that the advertising device is circulated or used for advertisement, educational, or promotional purposes. Copies of advertising devices related to FHA programs may be kept in either electronic or print format and are to be provided to HUD upon request.
For additional information see Handbook 4000.1 I.A.6.n.iii. at https://www.hud.gov/program_offices/administration/hudclips/handbooks/hsgh