Richard's Drive-In Car-feterias

Back in the 1950s and early/mid '60s, there were, in the Chicago area, several units of a drive-in restaurant chain called Richard's Drive-In Car-feterias. I specifically remember two locations; 87th St. and Stony Island Ave. in Chicago and W. 95th St. in or near Evergreen Park. There were others but I don't know their locations. I also remember a catchy radio jingle around 1960 or '61. The chain had restaurants both in the Midwest and on the East Coast, as Michael Karl Witzel's book The American Drive-In features a photo of a Richard's located in Cambridge MA circa 1957. The one in the photo matches my memories exactly, right down to the logo ( boy and girl twins munching on their double-deck "Twinburgers". ) My family ate at the Stony Island location a few times, and I remember the Twinburgers as being very similar to a Big Mac, only MUCH better. I'm very eager to learn more about this fond childhood memory; does anyone besides me remember Richard's?