AC WORKS 1.5ft NEMA L14-30P to NEMA TT-30R 30-Amp 4-wire To 3-wire Grounding Single To Single Yellow Basic Flexible Adapter in the Adapters & Splitters department at Lowes.com
Voltec Generator Adapter 04-00214 - The Home Depot
Briggs & Stratton 30 Amp Generator Adapter Cord Set - 25' Long 4 Outlets | eBay
Briggs & Stratton generator adapter cord set. 3e - Lil Dusty Online Auctions - All Estate Services, LLC
Briggs and Stratton 1659 Generator 20 amp powercord