The Monster Fun Record series are stories featuring Burger Chef, Jeff and a host of creepy creatures. The records measure 6" in diameter and come in a variety of bright colors. There were a total of six stories distributed with Funmeals as a Halloween promotion in 1977. They were manufactured by Eva-Tone Soundsheets of Deerfield, IL.
You can download mp3s of three of the stories below, they're also available on YouTube: